diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index 719af84e6..98ef29452 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -784,8 +784,6 @@ SET(LAUNCHER_SOURCES
     # GUI - windows
     ui/GuiUtil.h
     ui/GuiUtil.cpp
-    ui/ColorCache.h
-    ui/ColorCache.cpp
     ui/MainWindow.h
     ui/MainWindow.cpp
     ui/InstanceWindow.h
diff --git a/launcher/ui/ColorCache.cpp b/launcher/ui/ColorCache.cpp
deleted file mode 100644
index f941a6093..000000000
--- a/launcher/ui/ColorCache.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#include "ColorCache.h"
-
-/**
- * Blend the color with the front color, adapting to the back color
- */
-QColor ColorCache::blend(QColor color)
-{
-    if (Rainbow::luma(m_front) > Rainbow::luma(m_back)) {
-        // for dark color schemes, produce a fitting color first
-        color = Rainbow::tint(m_front, color, 0.5);
-    }
-    // adapt contrast
-    return Rainbow::mix(m_front, color, m_bias);
-}
-
-/**
- * Blend the color with the back color
- */
-QColor ColorCache::blendBackground(QColor color)
-{
-    // adapt contrast
-    return Rainbow::mix(m_back, color, m_bias);
-}
-
-void ColorCache::recolorAll()
-{
-    auto iter = m_colors.begin();
-    while (iter != m_colors.end()) {
-        iter->front = blend(iter->original);
-        iter->back = blendBackground(iter->original);
-    }
-}
diff --git a/launcher/ui/ColorCache.h b/launcher/ui/ColorCache.h
deleted file mode 100644
index 1cf292c13..000000000
--- a/launcher/ui/ColorCache.h
+++ /dev/null
@@ -1,106 +0,0 @@
-#pragma once
-#include <MessageLevel.h>
-#include <rainbow.h>
-#include <QMap>
-#include <QtGui/QColor>
-
-class ColorCache {
-   public:
-    ColorCache(QColor front, QColor back, qreal bias)
-    {
-        m_front = front;
-        m_back = back;
-        m_bias = bias;
-    };
-
-    void addColor(int key, QColor color) { m_colors[key] = { color, blend(color), blendBackground(color) }; }
-
-    void setForeground(QColor front)
-    {
-        if (m_front != front) {
-            m_front = front;
-            recolorAll();
-        }
-    }
-
-    void setBackground(QColor back)
-    {
-        if (m_back != back) {
-            m_back = back;
-            recolorAll();
-        }
-    }
-
-    QColor getFront(int key)
-    {
-        auto iter = m_colors.find(key);
-        if (iter == m_colors.end()) {
-            return QColor();
-        }
-        return (*iter).front;
-    }
-
-    QColor getBack(int key)
-    {
-        auto iter = m_colors.find(key);
-        if (iter == m_colors.end()) {
-            return QColor();
-        }
-        return (*iter).back;
-    }
-
-    /**
-     * Blend the color with the front color, adapting to the back color
-     */
-    QColor blend(QColor color);
-
-    /**
-     * Blend the color with the back color
-     */
-    QColor blendBackground(QColor color);
-
-   protected:
-    void recolorAll();
-
-   protected:
-    struct ColorEntry {
-        QColor original;
-        QColor front;
-        QColor back;
-    };
-
-   protected:
-    qreal m_bias;
-    QColor m_front;
-    QColor m_back;
-    QMap<int, ColorEntry> m_colors;
-};
-
-class LogColorCache : public ColorCache {
-   public:
-    LogColorCache(QColor front, QColor back) : ColorCache(front, back, 1.0)
-    {
-        addColor((int)MessageLevel::Launcher, QColor("purple"));
-        addColor((int)MessageLevel::Debug, QColor("green"));
-        addColor((int)MessageLevel::Warning, QColor("orange"));
-        addColor((int)MessageLevel::Error, QColor("red"));
-        addColor((int)MessageLevel::Fatal, QColor("red"));
-        addColor((int)MessageLevel::Message, front);
-    }
-
-    QColor getFront(MessageLevel::Enum level)
-    {
-        if (!m_colors.contains((int)level)) {
-            return ColorCache::getFront((int)MessageLevel::Message);
-        }
-        return ColorCache::getFront((int)level);
-    }
-
-    QColor getBack(MessageLevel::Enum level)
-    {
-        if (level == MessageLevel::Fatal) {
-            return QColor(Qt::black);
-        }
-        return QColor(Qt::transparent);
-    }
-};
diff --git a/launcher/ui/pages/global/LauncherPage.cpp b/launcher/ui/pages/global/LauncherPage.cpp
index 6a240389a..2f2ce6f70 100644
--- a/launcher/ui/pages/global/LauncherPage.cpp
+++ b/launcher/ui/pages/global/LauncherPage.cpp
@@ -4,6 +4,7 @@
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
  *  Copyright (c) 2022 dada513 <dada513@protonmail.com>
  *  Copyright (C) 2022 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -50,6 +51,7 @@
 #include "DesktopServices.h"
 #include "settings/SettingsObject.h"
 #include "ui/themes/ITheme.h"
+#include "ui/themes/ThemeManager.h"
 #include "updater/ExternalUpdater.h"
 
 #include <QApplication>
@@ -66,9 +68,6 @@ enum InstSortMode {
 LauncherPage::LauncherPage(QWidget* parent) : QWidget(parent), ui(new Ui::LauncherPage)
 {
     ui->setupUi(this);
-    auto origForeground = ui->fontPreview->palette().color(ui->fontPreview->foregroundRole());
-    auto origBackground = ui->fontPreview->palette().color(ui->fontPreview->backgroundRole());
-    m_colors.reset(new LogColorCache(origForeground, origBackground));
 
     ui->sortingModeGroup->setId(ui->sortByNameBtn, Sort_Name);
     ui->sortingModeGroup->setId(ui->sortLastLaunchedBtn, Sort_LastLaunch);
@@ -80,8 +79,9 @@ LauncherPage::LauncherPage(QWidget* parent) : QWidget(parent), ui(new Ui::Launch
 
     ui->updateSettingsBox->setHidden(!APPLICATION->updater());
 
-    connect(ui->fontSizeBox, SIGNAL(valueChanged(int)), SLOT(refreshFontPreview()));
-    connect(ui->consoleFont, SIGNAL(currentFontChanged(QFont)), SLOT(refreshFontPreview()));
+    connect(ui->fontSizeBox, QOverload<int>::of(&QSpinBox::valueChanged), this, &LauncherPage::refreshFontPreview);
+    connect(ui->consoleFont, &QFontComboBox::currentFontChanged, this, &LauncherPage::refreshFontPreview);
+    connect(ui->themeCustomizationWidget, &ThemeCustomizationWidget::currentWidgetThemeChanged, this, &LauncherPage::refreshFontPreview);
 
     connect(ui->themeCustomizationWidget, &ThemeCustomizationWidget::currentCatChanged, APPLICATION, &Application::currentCatChanged);
 }
@@ -311,37 +311,47 @@ void LauncherPage::loadSettings()
 
 void LauncherPage::refreshFontPreview()
 {
+    const LogColors& colors = APPLICATION->themeManager()->getLogColors();
+
     int fontSize = ui->fontSizeBox->value();
     QString fontFamily = ui->consoleFont->currentFont().family();
     ui->fontPreview->clear();
     defaultFormat->setFont(QFont(fontFamily, fontSize));
-    {
+
+    auto print = [this, colors](const QString& message, MessageLevel::Enum level) {
         QTextCharFormat format(*defaultFormat);
-        format.setForeground(m_colors->getFront(MessageLevel::Error));
+
+        QColor bg = colors.background.value(level);
+        QColor fg = colors.foreground.value(level);
+
+        if (bg.isValid())
+            format.setBackground(bg);
+
+        if (fg.isValid())
+            format.setForeground(fg);
+
         // append a paragraph/line
         auto workCursor = ui->fontPreview->textCursor();
         workCursor.movePosition(QTextCursor::End);
-        workCursor.insertText(tr("[Something/ERROR] A spooky error!"), format);
+        workCursor.insertText(message, format);
         workCursor.insertBlock();
-    }
-    {
-        QTextCharFormat format(*defaultFormat);
-        format.setForeground(m_colors->getFront(MessageLevel::Message));
-        // append a paragraph/line
-        auto workCursor = ui->fontPreview->textCursor();
-        workCursor.movePosition(QTextCursor::End);
-        workCursor.insertText(tr("[Test/INFO] A harmless message..."), format);
-        workCursor.insertBlock();
-    }
-    {
-        QTextCharFormat format(*defaultFormat);
-        format.setForeground(m_colors->getFront(MessageLevel::Warning));
-        // append a paragraph/line
-        auto workCursor = ui->fontPreview->textCursor();
-        workCursor.movePosition(QTextCursor::End);
-        workCursor.insertText(tr("[Something/WARN] A not so spooky warning."), format);
-        workCursor.insertBlock();
-    }
+    };
+
+    print(QString("%1 version: %2 (%3)\n")
+              .arg(BuildConfig.LAUNCHER_DISPLAYNAME, BuildConfig.printableVersionString(), BuildConfig.BUILD_PLATFORM),
+          MessageLevel::Launcher);
+
+    QDate today = QDate::currentDate();
+
+    if (today.month() == 10 && today.day() == 31)
+        print(tr("[Test/ERROR] OOoooOOOoooo! A spooky error!"), MessageLevel::Error);
+    else
+        print(tr("[Test/ERROR] A spooky error!"), MessageLevel::Error);
+
+    print(tr("[Test/INFO] A harmless message..."), MessageLevel::Info);
+    print(tr("[Test/WARN] A not so spooky warning."), MessageLevel::Warning);
+    print(tr("[Test/DEBUG] A secret debugging message..."), MessageLevel::Debug);
+    print(tr("[Test/FATAL] A terrifying fatal error!"), MessageLevel::Fatal);
 }
 
 void LauncherPage::retranslate()
diff --git a/launcher/ui/pages/global/LauncherPage.h b/launcher/ui/pages/global/LauncherPage.h
index f9aefb171..4a46d1e48 100644
--- a/launcher/ui/pages/global/LauncherPage.h
+++ b/launcher/ui/pages/global/LauncherPage.h
@@ -41,7 +41,6 @@
 #include <Application.h>
 #include <translations/TranslationsModel.h>
 #include "java/JavaChecker.h"
-#include "ui/ColorCache.h"
 #include "ui/pages/BasePage.h"
 
 class QTextCharFormat;
@@ -93,7 +92,5 @@ class LauncherPage : public QWidget, public BasePage {
     // default format for the font preview...
     QTextCharFormat* defaultFormat;
 
-    std::unique_ptr<LogColorCache> m_colors;
-
     std::shared_ptr<TranslationsModel> m_languageModel;
 };
diff --git a/launcher/ui/pages/instance/LogPage.cpp b/launcher/ui/pages/instance/LogPage.cpp
index 8e1e53762..0c22d1de6 100644
--- a/launcher/ui/pages/instance/LogPage.cpp
+++ b/launcher/ui/pages/instance/LogPage.cpp
@@ -3,7 +3,7 @@
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
  *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
- *  Copyright (C) 2022 TheKodeToad <TheKodeToad@proton.me>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -47,8 +47,8 @@
 #include "launch/LaunchTask.h"
 #include "settings/Setting.h"
 
-#include "ui/ColorCache.h"
 #include "ui/GuiUtil.h"
+#include "ui/themes/ThemeManager.h"
 
 #include <BuildConfig.h>
 
@@ -57,26 +57,36 @@ class LogFormatProxyModel : public QIdentityProxyModel {
     LogFormatProxyModel(QObject* parent = nullptr) : QIdentityProxyModel(parent) {}
     QVariant data(const QModelIndex& index, int role) const override
     {
+        const LogColors& colors = APPLICATION->themeManager()->getLogColors();
+
         switch (role) {
             case Qt::FontRole:
                 return m_font;
             case Qt::ForegroundRole: {
-                MessageLevel::Enum level = (MessageLevel::Enum)QIdentityProxyModel::data(index, LogModel::LevelRole).toInt();
-                return m_colors->getFront(level);
+                auto level = static_cast<MessageLevel::Enum>(QIdentityProxyModel::data(index, LogModel::LevelRole).toInt());
+                QColor result = colors.foreground.value(level);
+
+                if (result.isValid())
+                    return result;
+
+                break;
             }
             case Qt::BackgroundRole: {
-                MessageLevel::Enum level = (MessageLevel::Enum)QIdentityProxyModel::data(index, LogModel::LevelRole).toInt();
-                return m_colors->getBack(level);
+                auto level = static_cast<MessageLevel::Enum>(QIdentityProxyModel::data(index, LogModel::LevelRole).toInt());
+                QColor result = colors.background.value(level);
+
+                if (result.isValid())
+                    return result;
+
+                break;
             }
-            default:
-                return QIdentityProxyModel::data(index, role);
         }
+
+        return QIdentityProxyModel::data(index, role);
     }
 
     void setFont(QFont font) { m_font = font; }
 
-    void setColors(LogColorCache* colors) { m_colors.reset(colors); }
-
     QModelIndex find(const QModelIndex& start, const QString& value, bool reverse) const
     {
         QModelIndex parentIndex = parent(start);
@@ -125,7 +135,6 @@ class LogFormatProxyModel : public QIdentityProxyModel {
 
    private:
     QFont m_font;
-    std::unique_ptr<LogColorCache> m_colors;
 };
 
 LogPage::LogPage(InstancePtr instance, QWidget* parent) : QWidget(parent), ui(new Ui::LogPage), m_instance(instance)
@@ -134,12 +143,6 @@ LogPage::LogPage(InstancePtr instance, QWidget* parent) : QWidget(parent), ui(ne
     ui->tabWidget->tabBar()->hide();
 
     m_proxy = new LogFormatProxyModel(this);
-    // set up text colors in the log proxy and adapt them to the current theme foreground and background
-    {
-        auto origForeground = ui->text->palette().color(ui->text->foregroundRole());
-        auto origBackground = ui->text->palette().color(ui->text->backgroundRole());
-        m_proxy->setColors(new LogColorCache(origForeground, origBackground));
-    }
 
     // set up fonts in the log proxy
     {
diff --git a/launcher/ui/themes/BrightTheme.cpp b/launcher/ui/themes/BrightTheme.cpp
index 39a5bfd14..81bdd773e 100644
--- a/launcher/ui/themes/BrightTheme.cpp
+++ b/launcher/ui/themes/BrightTheme.cpp
@@ -46,11 +46,6 @@ QString BrightTheme::name()
     return QObject::tr("Bright");
 }
 
-bool BrightTheme::hasColorScheme()
-{
-    return true;
-}
-
 QPalette BrightTheme::colorScheme()
 {
     QPalette brightPalette;
diff --git a/launcher/ui/themes/BrightTheme.h b/launcher/ui/themes/BrightTheme.h
index 750e7bfc5..070eef124 100644
--- a/launcher/ui/themes/BrightTheme.h
+++ b/launcher/ui/themes/BrightTheme.h
@@ -45,7 +45,6 @@ class BrightTheme : public FusionTheme {
     QString tooltip() override;
     bool hasStyleSheet() override;
     QString appStyleSheet() override;
-    bool hasColorScheme() override;
     QPalette colorScheme() override;
     double fadeAmount() override;
     QColor fadeColor() override;
diff --git a/launcher/ui/themes/CustomTheme.cpp b/launcher/ui/themes/CustomTheme.cpp
index 22b366b62..081ba1900 100644
--- a/launcher/ui/themes/CustomTheme.cpp
+++ b/launcher/ui/themes/CustomTheme.cpp
@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2024 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -39,121 +40,6 @@
 
 const char* themeFile = "theme.json";
 
-static bool readThemeJson(const QString& path,
-                          QPalette& palette,
-                          double& fadeAmount,
-                          QColor& fadeColor,
-                          QString& name,
-                          QString& widgets,
-                          QString& qssFilePath,
-                          bool& dataIncomplete)
-{
-    QFileInfo pathInfo(path);
-    if (pathInfo.exists() && pathInfo.isFile()) {
-        try {
-            auto doc = Json::requireDocument(path, "Theme JSON file");
-            const QJsonObject root = doc.object();
-            dataIncomplete = !root.contains("qssFilePath");
-            name = Json::requireString(root, "name", "Theme name");
-            widgets = Json::requireString(root, "widgets", "Qt widget theme");
-            qssFilePath = Json::ensureString(root, "qssFilePath", "themeStyle.css");
-            auto colorsRoot = Json::requireObject(root, "colors", "colors object");
-            auto readColor = [&](QString colorName) -> QColor {
-                auto colorValue = Json::ensureString(colorsRoot, colorName, QString());
-                if (!colorValue.isEmpty()) {
-                    QColor color(colorValue);
-                    if (!color.isValid()) {
-                        themeWarningLog() << "Color value" << colorValue << "for" << colorName << "was not recognized.";
-                        return QColor();
-                    }
-                    return color;
-                }
-                return QColor();
-            };
-            auto readAndSetColor = [&](QPalette::ColorRole role, QString colorName) {
-                auto color = readColor(colorName);
-                if (color.isValid()) {
-                    palette.setColor(role, color);
-                } else {
-                    themeDebugLog() << "Color value for" << colorName << "was not present.";
-                }
-            };
-
-            // palette
-            readAndSetColor(QPalette::Window, "Window");
-            readAndSetColor(QPalette::WindowText, "WindowText");
-            readAndSetColor(QPalette::Base, "Base");
-            readAndSetColor(QPalette::AlternateBase, "AlternateBase");
-            readAndSetColor(QPalette::ToolTipBase, "ToolTipBase");
-            readAndSetColor(QPalette::ToolTipText, "ToolTipText");
-            readAndSetColor(QPalette::Text, "Text");
-            readAndSetColor(QPalette::Button, "Button");
-            readAndSetColor(QPalette::ButtonText, "ButtonText");
-            readAndSetColor(QPalette::BrightText, "BrightText");
-            readAndSetColor(QPalette::Link, "Link");
-            readAndSetColor(QPalette::Highlight, "Highlight");
-            readAndSetColor(QPalette::HighlightedText, "HighlightedText");
-
-            // fade
-            fadeColor = readColor("fadeColor");
-            fadeAmount = Json::ensureDouble(colorsRoot, "fadeAmount", 0.5, "fade amount");
-
-        } catch (const Exception& e) {
-            themeWarningLog() << "Couldn't load theme json: " << e.cause();
-            return false;
-        }
-    } else {
-        themeDebugLog() << "No theme json present.";
-        return false;
-    }
-    return true;
-}
-
-static bool writeThemeJson(const QString& path,
-                           const QPalette& palette,
-                           double fadeAmount,
-                           QColor fadeColor,
-                           QString name,
-                           QString widgets,
-                           QString qssFilePath)
-{
-    QJsonObject rootObj;
-    rootObj.insert("name", name);
-    rootObj.insert("widgets", widgets);
-    rootObj.insert("qssFilePath", qssFilePath);
-
-    QJsonObject colorsObj;
-    auto insertColor = [&](QPalette::ColorRole role, QString colorName) { colorsObj.insert(colorName, palette.color(role).name()); };
-
-    // palette
-    insertColor(QPalette::Window, "Window");
-    insertColor(QPalette::WindowText, "WindowText");
-    insertColor(QPalette::Base, "Base");
-    insertColor(QPalette::AlternateBase, "AlternateBase");
-    insertColor(QPalette::ToolTipBase, "ToolTipBase");
-    insertColor(QPalette::ToolTipText, "ToolTipText");
-    insertColor(QPalette::Text, "Text");
-    insertColor(QPalette::Button, "Button");
-    insertColor(QPalette::ButtonText, "ButtonText");
-    insertColor(QPalette::BrightText, "BrightText");
-    insertColor(QPalette::Link, "Link");
-    insertColor(QPalette::Highlight, "Highlight");
-    insertColor(QPalette::HighlightedText, "HighlightedText");
-
-    // fade
-    colorsObj.insert("fadeColor", fadeColor.name());
-    colorsObj.insert("fadeAmount", fadeAmount);
-
-    rootObj.insert("colors", colorsObj);
-    try {
-        Json::write(rootObj, path);
-        return true;
-    } catch ([[maybe_unused]] const Exception& e) {
-        themeWarningLog() << "Failed to write theme json to" << path;
-        return false;
-    }
-}
-
 /// @param baseTheme Base Theme
 /// @param fileInfo FileInfo object for file to load
 /// @param isManifest whether to load a theme manifest or a qss file
@@ -176,23 +62,22 @@ CustomTheme::CustomTheme(ITheme* baseTheme, QFileInfo& fileInfo, bool isManifest
 
         auto themeFilePath = FS::PathCombine(path, themeFile);
 
-        bool jsonDataIncomplete = false;
-
         m_palette = baseTheme->colorScheme();
-        if (readThemeJson(themeFilePath, m_palette, m_fadeAmount, m_fadeColor, m_name, m_widgets, m_qssFilePath, jsonDataIncomplete)) {
+
+        bool hasCustomLogColors = false;
+
+        if (read(themeFilePath, hasCustomLogColors)) {
             // If theme data was found, fade "Disabled" color of each role according to FadeAmount
             m_palette = fadeInactive(m_palette, m_fadeAmount, m_fadeColor);
+
+            if (!hasCustomLogColors)
+                m_logColors = defaultLogColors(m_palette);
         } else {
             themeDebugLog() << "Did not read theme json file correctly, not changing theme, keeping previous.";
+            m_logColors = defaultLogColors(m_palette);
             return;
         }
 
-        // FIXME: This is kinda jank, it only actually checks if the qss file path is not present. It should actually check for any relevant
-        // missing data (e.g. name, colors)
-        if (jsonDataIncomplete) {
-            writeThemeJson(fileInfo.absoluteFilePath(), m_palette, m_fadeAmount, m_fadeColor, m_name, m_widgets, m_qssFilePath);
-        }
-
         auto qssFilePath = FS::PathCombine(path, m_qssFilePath);
         QFileInfo info(qssFilePath);
         if (info.isFile()) {
@@ -251,11 +136,6 @@ QString CustomTheme::name()
     return m_name;
 }
 
-bool CustomTheme::hasColorScheme()
-{
-    return true;
-}
-
 QPalette CustomTheme::colorScheme()
 {
     return m_palette;
@@ -289,3 +169,99 @@ QString CustomTheme::tooltip()
 {
     return m_tooltip;
 }
+
+bool CustomTheme::read(const QString& path, bool& hasCustomLogColors)
+{
+    QFileInfo pathInfo(path);
+    if (pathInfo.exists() && pathInfo.isFile()) {
+        try {
+            auto doc = Json::requireDocument(path, "Theme JSON file");
+            const QJsonObject root = doc.object();
+            m_name = Json::requireString(root, "name", "Theme name");
+            m_widgets = Json::requireString(root, "widgets", "Qt widget theme");
+            m_qssFilePath = Json::ensureString(root, "qssFilePath", "themeStyle.css");
+
+            auto readColor = [&](const QJsonObject& colors, const QString& colorName) -> QColor {
+                auto colorValue = Json::ensureString(colors, colorName, QString());
+                if (!colorValue.isEmpty()) {
+                    QColor color(colorValue);
+                    if (!color.isValid()) {
+                        themeWarningLog() << "Color value" << colorValue << "for" << colorName << "was not recognized.";
+                        return {};
+                    }
+                    return color;
+                }
+                return {};
+            };
+
+            if (root.contains("colors")) {
+                auto colorsRoot = Json::requireObject(root, "colors");
+                auto readAndSetPaletteColor = [&](QPalette::ColorRole role, const QString& colorName) {
+                    auto color = readColor(colorsRoot, colorName);
+                    if (color.isValid()) {
+                        m_palette.setColor(role, color);
+                    } else {
+                        themeDebugLog() << "Color value for" << colorName << "was not present.";
+                    }
+                };
+
+                // palette
+                readAndSetPaletteColor(QPalette::Window, "Window");
+                readAndSetPaletteColor(QPalette::WindowText, "WindowText");
+                readAndSetPaletteColor(QPalette::Base, "Base");
+                readAndSetPaletteColor(QPalette::AlternateBase, "AlternateBase");
+                readAndSetPaletteColor(QPalette::ToolTipBase, "ToolTipBase");
+                readAndSetPaletteColor(QPalette::ToolTipText, "ToolTipText");
+                readAndSetPaletteColor(QPalette::Text, "Text");
+                readAndSetPaletteColor(QPalette::Button, "Button");
+                readAndSetPaletteColor(QPalette::ButtonText, "ButtonText");
+                readAndSetPaletteColor(QPalette::BrightText, "BrightText");
+                readAndSetPaletteColor(QPalette::Link, "Link");
+                readAndSetPaletteColor(QPalette::Highlight, "Highlight");
+                readAndSetPaletteColor(QPalette::HighlightedText, "HighlightedText");
+
+                // fade
+                m_fadeColor = readColor(colorsRoot, "fadeColor");
+                m_fadeAmount = Json::ensureDouble(colorsRoot, "fadeAmount", 0.5, "fade amount");
+            }
+
+            if (root.contains("logColors")) {
+                hasCustomLogColors = true;
+
+                auto logColorsRoot = Json::requireObject(root, "logColors");
+                auto readAndSetLogColor = [&](MessageLevel::Enum level, bool fg, const QString& colorName) {
+                    auto color = readColor(logColorsRoot, colorName);
+                    if (color.isValid()) {
+                        if (fg)
+                            m_logColors.foreground[level] = color;
+                        else
+                            m_logColors.background[level] = color;
+                    } else {
+                        themeDebugLog() << "Color value for" << colorName << "was not present.";
+                    }
+                };
+
+                readAndSetLogColor(MessageLevel::Message, false, "MessageHighlight");
+                readAndSetLogColor(MessageLevel::Launcher, false, "LauncherHighlight");
+                readAndSetLogColor(MessageLevel::Debug, false, "DebugHighlight");
+                readAndSetLogColor(MessageLevel::Warning, false, "WarningHighlight");
+                readAndSetLogColor(MessageLevel::Error, false, "ErrorHighlight");
+                readAndSetLogColor(MessageLevel::Fatal, false, "FatalHighlight");
+
+                readAndSetLogColor(MessageLevel::Message, true, "Message");
+                readAndSetLogColor(MessageLevel::Launcher, true, "Launcher");
+                readAndSetLogColor(MessageLevel::Debug, true, "Debug");
+                readAndSetLogColor(MessageLevel::Warning, true, "Warning");
+                readAndSetLogColor(MessageLevel::Error, true, "Error");
+                readAndSetLogColor(MessageLevel::Fatal, true, "Fatal");
+            }
+        } catch (const Exception& e) {
+            themeWarningLog() << "Couldn't load theme json: " << e.cause();
+            return false;
+        }
+    } else {
+        themeDebugLog() << "No theme json present.";
+        return false;
+    }
+    return true;
+}
diff --git a/launcher/ui/themes/CustomTheme.h b/launcher/ui/themes/CustomTheme.h
index 761a2bd90..b8d073921 100644
--- a/launcher/ui/themes/CustomTheme.h
+++ b/launcher/ui/themes/CustomTheme.h
@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2024 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -47,14 +48,16 @@ class CustomTheme : public ITheme {
     QString tooltip() override;
     bool hasStyleSheet() override;
     QString appStyleSheet() override;
-    bool hasColorScheme() override;
     QPalette colorScheme() override;
     double fadeAmount() override;
     QColor fadeColor() override;
     QString qtTheme() override;
+    LogColors logColorScheme() override { return m_logColors; }
     QStringList searchPaths() override;
 
-   private: /* data */
+   private:
+    bool read(const QString& path, bool& hasCustomLogColors);
+
     QPalette m_palette;
     QColor m_fadeColor;
     double m_fadeAmount;
@@ -63,6 +66,7 @@ class CustomTheme : public ITheme {
     QString m_id;
     QString m_widgets;
     QString m_qssFilePath;
+    LogColors m_logColors;
     /**
      * The tooltip could be defined in the theme json,
      * or composed of other fields that could be in there.
diff --git a/launcher/ui/themes/DarkTheme.cpp b/launcher/ui/themes/DarkTheme.cpp
index 429d046ac..804126547 100644
--- a/launcher/ui/themes/DarkTheme.cpp
+++ b/launcher/ui/themes/DarkTheme.cpp
@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2024 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -46,11 +47,6 @@ QString DarkTheme::name()
     return QObject::tr("Dark");
 }
 
-bool DarkTheme::hasColorScheme()
-{
-    return true;
-}
-
 QPalette DarkTheme::colorScheme()
 {
     QPalette darkPalette;
@@ -90,6 +86,7 @@ QString DarkTheme::appStyleSheet()
 {
     return "QToolTip { color: #ffffff; background-color: #2a82da; border: 1px solid white; }";
 }
+
 QString DarkTheme::tooltip()
 {
     return "";
diff --git a/launcher/ui/themes/DarkTheme.h b/launcher/ui/themes/DarkTheme.h
index 819f6a934..c97edbcbe 100644
--- a/launcher/ui/themes/DarkTheme.h
+++ b/launcher/ui/themes/DarkTheme.h
@@ -45,7 +45,6 @@ class DarkTheme : public FusionTheme {
     QString tooltip() override;
     bool hasStyleSheet() override;
     QString appStyleSheet() override;
-    bool hasColorScheme() override;
     QPalette colorScheme() override;
     double fadeAmount() override;
     QColor fadeColor() override;
diff --git a/launcher/ui/themes/ITheme.cpp b/launcher/ui/themes/ITheme.cpp
index 046ae16b4..cae6e90db 100644
--- a/launcher/ui/themes/ITheme.cpp
+++ b/launcher/ui/themes/ITheme.cpp
@@ -44,9 +44,7 @@ void ITheme::apply(bool)
 {
     APPLICATION->setStyleSheet(QString());
     QApplication::setStyle(new HintOverrideProxyStyle(QStyleFactory::create(qtTheme())));
-    if (hasColorScheme()) {
-        QApplication::setPalette(colorScheme());
-    }
+    QApplication::setPalette(colorScheme());
     APPLICATION->setStyleSheet(appStyleSheet());
     QDir::setSearchPaths("theme", searchPaths());
 }
@@ -73,3 +71,30 @@ QPalette ITheme::fadeInactive(QPalette in, qreal bias, QColor color)
     blend(QPalette::HighlightedText);
     return in;
 }
+
+LogColors ITheme::defaultLogColors(const QPalette& palette)
+{
+    LogColors result;
+
+    const QColor& bg = palette.color(QPalette::Base);
+    const QColor& fg = palette.color(QPalette::Text);
+
+    auto blend = [bg, fg](QColor color) {
+        if (Rainbow::luma(fg) > Rainbow::luma(bg)) {
+            // for dark color schemes, produce a fitting color first
+            color = Rainbow::tint(fg, color, 0.5);
+        }
+        // adapt contrast
+        return Rainbow::mix(fg, color, 1);
+    };
+
+    result.background[MessageLevel::Fatal] = Qt::black;
+
+    result.foreground[MessageLevel::Launcher] = blend(QColor("purple"));
+    result.foreground[MessageLevel::Debug] = blend(QColor("green"));
+    result.foreground[MessageLevel::Warning] = blend(QColor("orange"));
+    result.foreground[MessageLevel::Error] = blend(QColor("red"));
+    result.foreground[MessageLevel::Fatal] = blend(QColor("red"));
+
+    return result;
+}
diff --git a/launcher/ui/themes/ITheme.h b/launcher/ui/themes/ITheme.h
index 45d3e2739..7dc5fc64a 100644
--- a/launcher/ui/themes/ITheme.h
+++ b/launcher/ui/themes/ITheme.h
@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2022 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -33,11 +34,19 @@
  *      limitations under the License.
  */
 #pragma once
+#include <MessageLevel.h>
+#include <QMap>
 #include <QPalette>
 #include <QString>
 
 class QStyle;
 
+struct LogColors {
+    QMap<MessageLevel::Enum, QColor> background;
+    QMap<MessageLevel::Enum, QColor> foreground;
+};
+
+// TODO: rename to Theme; this is not an interface as it contains method implementations
 class ITheme {
    public:
     virtual ~ITheme() {}
@@ -48,11 +57,12 @@ class ITheme {
     virtual bool hasStyleSheet() = 0;
     virtual QString appStyleSheet() = 0;
     virtual QString qtTheme() = 0;
-    virtual bool hasColorScheme() = 0;
     virtual QPalette colorScheme() = 0;
     virtual QColor fadeColor() = 0;
     virtual double fadeAmount() = 0;
+    virtual LogColors logColorScheme() { return defaultLogColors(colorScheme()); }
     virtual QStringList searchPaths() { return {}; }
 
     static QPalette fadeInactive(QPalette in, qreal bias, QColor color);
+    static LogColors defaultLogColors(const QPalette& palette);
 };
diff --git a/launcher/ui/themes/SystemTheme.cpp b/launcher/ui/themes/SystemTheme.cpp
index 70de21894..791df2ed4 100644
--- a/launcher/ui/themes/SystemTheme.cpp
+++ b/launcher/ui/themes/SystemTheme.cpp
@@ -125,8 +125,3 @@ bool SystemTheme::hasStyleSheet()
 {
     return false;
 }
-
-bool SystemTheme::hasColorScheme()
-{
-    return true;
-}
diff --git a/launcher/ui/themes/SystemTheme.h b/launcher/ui/themes/SystemTheme.h
index 5c58856cb..783f2e4c2 100644
--- a/launcher/ui/themes/SystemTheme.h
+++ b/launcher/ui/themes/SystemTheme.h
@@ -48,7 +48,6 @@ class SystemTheme : public ITheme {
     QString qtTheme() override;
     bool hasStyleSheet() override;
     QString appStyleSheet() override;
-    bool hasColorScheme() override;
     QPalette colorScheme() override;
     double fadeAmount() override;
     QColor fadeColor() override;
diff --git a/launcher/ui/themes/ThemeManager.cpp b/launcher/ui/themes/ThemeManager.cpp
index d57e166f4..ad9a6f88e 100644
--- a/launcher/ui/themes/ThemeManager.cpp
+++ b/launcher/ui/themes/ThemeManager.cpp
@@ -123,11 +123,11 @@ void ThemeManager::initializeWidgets()
 {
     themeDebugLog() << "Determining System Widget Theme...";
     const auto& style = QApplication::style();
-    currentlySelectedSystemTheme = style->objectName();
-    themeDebugLog() << "System theme seems to be:" << currentlySelectedSystemTheme;
+    m_currentlySelectedSystemTheme = style->objectName();
+    themeDebugLog() << "System theme seems to be:" << m_currentlySelectedSystemTheme;
 
     themeDebugLog() << "<> Initializing Widget Themes";
-    themeDebugLog() << "Loading Built-in Theme:" << addTheme(std::make_unique<SystemTheme>(currentlySelectedSystemTheme, true));
+    themeDebugLog() << "Loading Built-in Theme:" << addTheme(std::make_unique<SystemTheme>(m_currentlySelectedSystemTheme, true));
     auto darkThemeId = addTheme(std::make_unique<DarkTheme>());
     themeDebugLog() << "Loading Built-in Theme:" << darkThemeId;
     themeDebugLog() << "Loading Built-in Theme:" << addTheme(std::make_unique<BrightTheme>());
@@ -196,8 +196,8 @@ QList<ITheme*> ThemeManager::getValidApplicationThemes()
 QList<CatPack*> ThemeManager::getValidCatPacks()
 {
     QList<CatPack*> ret;
-    ret.reserve(m_cat_packs.size());
-    for (auto&& [id, theme] : m_cat_packs) {
+    ret.reserve(m_catPacks.size());
+    for (auto&& [id, theme] : m_catPacks) {
         ret.append(theme.get());
     }
     return ret;
@@ -246,6 +246,8 @@ void ThemeManager::setApplicationTheme(const QString& name, bool initial)
         auto& theme = themeIter->second;
         themeDebugLog() << "applying theme" << theme->name();
         theme->apply(initial);
+
+        m_logColors = theme->logColorScheme();
     } else {
         themeWarningLog() << "Tried to set invalid theme:" << name;
     }
@@ -258,7 +260,7 @@ void ThemeManager::applyCurrentlySelectedTheme(bool initial)
     themeDebugLog() << "<> Icon theme set.";
     auto applicationTheme = settings->get("ApplicationTheme").toString();
     if (applicationTheme == "") {
-        applicationTheme = currentlySelectedSystemTheme;
+        applicationTheme = m_currentlySelectedSystemTheme;
     }
     setApplicationTheme(applicationTheme, initial);
     themeDebugLog() << "<> Application theme set.";
@@ -266,8 +268,8 @@ void ThemeManager::applyCurrentlySelectedTheme(bool initial)
 
 QString ThemeManager::getCatPack(QString catName)
 {
-    auto catIter = m_cat_packs.find(!catName.isEmpty() ? catName : APPLICATION->settings()->get("BackgroundCat").toString());
-    if (catIter != m_cat_packs.end()) {
+    auto catIter = m_catPacks.find(!catName.isEmpty() ? catName : APPLICATION->settings()->get("BackgroundCat").toString());
+    if (catIter != m_catPacks.end()) {
         auto& catPack = catIter->second;
         themeDebugLog() << "applying catpack" << catPack->id();
         return catPack->path();
@@ -275,14 +277,14 @@ QString ThemeManager::getCatPack(QString catName)
         themeWarningLog() << "Tried to get invalid catPack:" << catName;
     }
 
-    return m_cat_packs.begin()->second->path();
+    return m_catPacks.begin()->second->path();
 }
 
 QString ThemeManager::addCatPack(std::unique_ptr<CatPack> catPack)
 {
     QString id = catPack->id();
-    if (m_cat_packs.find(id) == m_cat_packs.end())
-        m_cat_packs.emplace(id, std::move(catPack));
+    if (m_catPacks.find(id) == m_catPacks.end())
+        m_catPacks.emplace(id, std::move(catPack));
     else
         themeWarningLog() << "CatPack(" << id << ") not added to prevent id duplication";
     return id;
@@ -340,8 +342,8 @@ void ThemeManager::refresh()
 {
     m_themes.clear();
     m_icons.clear();
-    m_cat_packs.clear();
+    m_catPacks.clear();
 
     initializeThemes();
     initializeCatPacks();
-};
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/launcher/ui/themes/ThemeManager.h b/launcher/ui/themes/ThemeManager.h
index 9d01d38e7..8bbcd34a9 100644
--- a/launcher/ui/themes/ThemeManager.h
+++ b/launcher/ui/themes/ThemeManager.h
@@ -2,7 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2024 Tayou <git@tayou.org>
- *  Copyright (C) 2023 TheKodeToad <TheKodeToad@proton.me>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -55,6 +55,8 @@ class ThemeManager {
     QString getCatPack(QString catName = "");
     QList<CatPack*> getValidCatPacks();
 
+    const LogColors& getLogColors() { return m_logColors; }
+
     void refresh();
 
    private:
@@ -63,8 +65,9 @@ class ThemeManager {
     QDir m_iconThemeFolder{ "iconthemes" };
     QDir m_applicationThemeFolder{ "themes" };
     QDir m_catPacksFolder{ "catpacks" };
-    std::map<QString, std::unique_ptr<CatPack>> m_cat_packs;
-    QString currentlySelectedSystemTheme;
+    std::map<QString, std::unique_ptr<CatPack>> m_catPacks;
+    QString m_currentlySelectedSystemTheme;
+    LogColors m_logColors;
 
     void initializeThemes();
     void initializeCatPacks();