DolphinQt: Revise built-in styles and enable in all platforms.

The built-in styles have been borrowed from the Dolphin Memory Engine
buddy application.

**Dark style on Windows:**
| Dark (current) | Dark 2 (new) |
| -------------- | ------------ |
| <img width="1920" height="1080" alt="[Dolphin Emulator] Legacy Dark style on Windows" title="[Dolphin Emulator] Legacy Dark style on Windows" src="https://github.com/user-attachments/assets/1a6771da-45fb-4eac-b51b-331e063dffb9" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark style on Windows" title="[Dolphin Emulator] Dark style on Windows" src="https://github.com/user-attachments/assets/76f19a14-d6ce-489e-ac92-4ab12942cc43" /> |

All styles are now available in all platforms:

- System
- Light
- Dark Gray
- Dark
- Dark 2

**New built-in styles on Windows:**
| System | Light | Dark Gray | Dark 2 |
| ------ | ----- | --------- | ------ |
| <img width="1920" height="1080" alt="[Dolphin Emulator] System style on Windows" title="[Dolphin Emulator] System style on Windows" src="https://github.com/user-attachments/assets/cd5a52b6-6fd6-4ffa-a1d7-40a2714b399a" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Light style on Windows" title="[Dolphin Emulator] Light style on Windows" src="https://github.com/user-attachments/assets/c106879c-ad34-4d60-9f99-c9aecfeeb290" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark Gray style on Windows" title="[Dolphin Emulator] Dark Gray style on Windows" src="https://github.com/user-attachments/assets/6bd61b7d-a818-4803-8033-13fd0cab3b5c" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark 2 style on Windows" title="[Dolphin Emulator] Dark 2 style on Windows" src="https://github.com/user-attachments/assets/76f19a14-d6ce-489e-ac92-4ab12942cc43" /> |

**New built-in styles on KDE:**
| System | Light | Dark Gray | Dark 2 |
| ------ | ----- | --------- | ------ |
| <img width="1920" height="1080" alt="[Dolphin Emulator] System style on KDE" title="[Dolphin Emulator] System style on KDE" src="https://github.com/user-attachments/assets/7ed0d88d-209d-4912-84c1-2ed7f3c83a71" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Light style on KDE" title="[Dolphin Emulator] Light style on KDE" src="https://github.com/user-attachments/assets/27dfe808-aa95-412a-b4f5-ca4ff469818a" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark Gray style on KDE" title="[Dolphin Emulator] Dark Gray style on KDE" src="https://github.com/user-attachments/assets/4f6fbdf1-889f-498e-b32e-c53628d21b12" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark 2 style on KDE" title="[Dolphin Emulator] Dark 2 style on KDE" src="https://github.com/user-attachments/assets/22ddaac3-1bfd-4ffb-927c-f73e9a374a0b" /> |

**New built-in styles on Cinnamon:**
| System | Light | Dark Gray | Dark 2 |
| ------ | ----- | --------- | ------ |
| <img width="1920" height="1080" alt="[Dolphin Emulator] System style on Cinnamon" title="[Dolphin Emulator] System style on Cinnamon" src="https://github.com/user-attachments/assets/ba07aef5-ac1a-413d-97e9-f679b25218c5" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Light style on Cinnamon" title="[Dolphin Emulator] Light style on Cinnamon" src="https://github.com/user-attachments/assets/f2627ea4-77a3-4eea-b37a-dc2abcf13d42" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark Gray style on Cinnamon" title="[Dolphin Emulator] Dark Gray style on Cinnamon" src="https://github.com/user-attachments/assets/d4d779e8-8ef5-49a3-997d-991b2e46cafa" /> | <img width="1920" height="1080" alt="[Dolphin Emulator] Dark 2 style on Cinnamon" title="[Dolphin Emulator] Dark 2 style on Cinnamon" src="https://github.com/user-attachments/assets/096d9162-5abe-4bb7-8951-96271cb40019" /> |

Source/Core/Core/ActionReplay.cpp

@@ -174,6 +174,15 @@ void AddCode(ARCode code)
   }
 }
 
+size_t CountEnabledCodes()
+{
+  if (!Config::AreCheatsEnabled())
+    return 0;
+
+  std::lock_guard guard(s_lock);
+  return s_active_codes.size();
+}
+
 void LoadAndApplyCodes(const Common::IniFile& global_ini, const Common::IniFile& local_ini,
                        const std::string& game_id, u16 revision)
 {

Source/Core/Core/ActionReplay.h

@@ -50,6 +50,7 @@ void SetSyncedCodesAsActive();
 void UpdateSyncedCodes(std::span<const ARCode> codes);
 std::vector<ARCode> ApplyAndReturnCodes(std::span<const ARCode> codes);
 void AddCode(ARCode new_code);
+size_t CountEnabledCodes();
 void LoadAndApplyCodes(const Common::IniFile& global_ini, const Common::IniFile& local_ini,
                        const std::string& game_id, u16 revision);
 

Source/Core/Core/GeckoCode.cpp

@@ -50,6 +50,15 @@ static std::vector<GeckoCode> s_active_codes;
 static std::vector<GeckoCode> s_synced_codes;
 static std::mutex s_active_codes_lock;
 
+size_t CountEnabledCodes()
+{
+  if (!Config::AreCheatsEnabled())
+    return 0;
+
+  std::lock_guard guard(s_active_codes_lock);
+  return s_active_codes.size();
+}
+
 void SetActiveCodes(std::span<const GeckoCode> gcodes, const std::string& game_id, u16 revision)
 {
   std::lock_guard lk(s_active_codes_lock);

Source/Core/Core/GeckoCode.h

@@ -60,6 +60,7 @@ constexpr u32 HLE_TRAMPOLINE_ADDRESS = INSTALLER_END_ADDRESS - 4;
 // preserve the emulation performance.
 constexpr u32 MAGIC_GAMEID = 0xD01F1BAD;
 
+size_t CountEnabledCodes();
 void SetActiveCodes(std::span<const GeckoCode> gcodes, const std::string& game_id, u16 revision);
 void SetSyncedCodesAsActive();
 void UpdateSyncedCodes(std::span<const GeckoCode> gcodes);

Source/Core/Core/PatchEngine.cpp

@@ -35,6 +35,7 @@
 #include "Core/PowerPC/MMU.h"
 #include "Core/PowerPC/PowerPC.h"
 #include "Core/System.h"
+#include "VideoCommon/OnScreenDisplay.h"
 
 namespace PatchEngine
 {
@@ -200,6 +201,18 @@ void LoadPatches()
     ActionReplay::LoadAndApplyCodes(globalIni, localIni, sconfig.GetGameID(),
                                     sconfig.GetRevision());
   }
+
+  const size_t enabled_patch_count =
+      std::ranges::count_if(s_on_frame, [](Patch patch) { return patch.enabled; });
+  if (enabled_patch_count > 0)
+  {
+    OSD::AddMessage(fmt::format("{} game patch(es) enabled", enabled_patch_count),
+                    OSD::Duration::NORMAL);
+  }
+
+  const size_t enabled_cheat_count = ActionReplay::CountEnabledCodes() + Gecko::CountEnabledCodes();
+  if (enabled_cheat_count > 0)
+    OSD::AddMessage(fmt::format("{} cheat(s) enabled", enabled_cheat_count), OSD::Duration::NORMAL);
 }
 
 static void ApplyPatches(const Core::CPUThreadGuard& guard, const std::vector<Patch>& patches)

Source/Core/DolphinQt/CMakeLists.txt

@@ -402,11 +402,9 @@ add_executable(dolphin-emu
   WiiUpdate.h
 )
 
-if (WIN32)
-  target_sources(dolphin-emu PRIVATE
-    Styles/Dark/dark.qrc
-  )
-endif()
+target_sources(dolphin-emu PRIVATE
+  Styles/Dark/dark.qrc
+)
 
 if (NOT WIN32)
   target_sources(dolphin-emu PRIVATE

Source/Core/DolphinQt/Settings.cpp

@@ -160,35 +160,151 @@ bool Settings::IsThemeDark()
 void Settings::ApplyStyle()
 {
   const StyleType style_type = GetStyleType();
-  const QString stylesheet_name = GetUserStyleName();
-  QString stylesheet_contents;
 
-  // If we haven't found one, we continue with an empty (default) style
-  if (!stylesheet_name.isEmpty() && style_type == StyleType::User)
   {
-    // Load custom user stylesheet
-    QDir directory = QDir(QString::fromStdString(File::GetUserPath(D_STYLES_IDX)));
-    QFile stylesheet(directory.filePath(stylesheet_name));
-
-    if (stylesheet.open(QFile::ReadOnly))
-      stylesheet_contents = QString::fromUtf8(stylesheet.readAll().data());
+    const bool use_fusion{style_type == StyleType::Light || style_type == StyleType::DarkGray ||
+                          style_type == StyleType::Dark2};
+    static const QString s_initial_style_name{QApplication::style()->name()};
+    const QString style_name{use_fusion ? QStringLiteral("fusion") : s_initial_style_name};
+    if (QApplication::style()->name() != style_name)
+      QApplication::setStyle(style_name);
   }
 
-#ifdef _WIN32
-  // Unlike other OSes we don't automatically get a default dark theme on Windows.
-  // We manually load a dark palette for our included "(Dark)" style,
-  //  and for *any* external style when the system is in "Dark" mode.
-  // Unfortunately it doesn't seem trivial to load a palette based on the stylesheet itself.
-  if (style_type == StyleType::Dark || (style_type != StyleType::Light && IsSystemDark()))
-  {
-    if (stylesheet_contents.isEmpty())
-    {
-      QFile file(QStringLiteral(":/dolphin_dark_win/dark.qss"));
-      if (file.open(QFile::ReadOnly))
-        stylesheet_contents = QString::fromUtf8(file.readAll().data());
-    }
+  QString style_sheet;
+  QPalette palette;
 
-    QPalette palette = qApp->style()->standardPalette();
+  if (style_type == StyleType::Light)
+  {
+    palette.setColor(QPalette::All, QPalette::Window, QColor(239, 239, 239));
+    palette.setColor(QPalette::Disabled, QPalette::Window, QColor(239, 239, 239));
+    palette.setColor(QPalette::All, QPalette::WindowText, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(190, 190, 190));
+    palette.setColor(QPalette::All, QPalette::Base, QColor(255, 255, 255));
+    palette.setColor(QPalette::Disabled, QPalette::Base, QColor(239, 239, 239));
+    palette.setColor(QPalette::All, QPalette::AlternateBase, QColor(247, 247, 247));
+    palette.setColor(QPalette::Disabled, QPalette::AlternateBase, QColor(247, 247, 247));
+    palette.setColor(QPalette::All, QPalette::ToolTipBase, QColor(255, 255, 220));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipBase, QColor(255, 255, 220));
+    palette.setColor(QPalette::All, QPalette::ToolTipText, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipText, QColor(0, 0, 0));
+    palette.setColor(QPalette::All, QPalette::PlaceholderText, QColor(119, 119, 119));
+    palette.setColor(QPalette::Disabled, QPalette::PlaceholderText, QColor(119, 119, 119));
+    palette.setColor(QPalette::All, QPalette::Text, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::Text, QColor(190, 190, 190));
+    palette.setColor(QPalette::All, QPalette::Button, QColor(239, 239, 239));
+    palette.setColor(QPalette::Disabled, QPalette::Button, QColor(239, 239, 239));
+    palette.setColor(QPalette::All, QPalette::ButtonText, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(190, 190, 190));
+    palette.setColor(QPalette::All, QPalette::BrightText, QColor(255, 255, 255));
+    palette.setColor(QPalette::Disabled, QPalette::BrightText, QColor(255, 255, 255));
+    palette.setColor(QPalette::All, QPalette::Light, QColor(255, 255, 255));
+    palette.setColor(QPalette::Disabled, QPalette::Light, QColor(255, 255, 255));
+    palette.setColor(QPalette::All, QPalette::Midlight, QColor(202, 202, 202));
+    palette.setColor(QPalette::Disabled, QPalette::Midlight, QColor(202, 202, 202));
+    palette.setColor(QPalette::All, QPalette::Dark, QColor(159, 159, 159));
+    palette.setColor(QPalette::Disabled, QPalette::Dark, QColor(190, 190, 190));
+    palette.setColor(QPalette::All, QPalette::Mid, QColor(184, 184, 184));
+    palette.setColor(QPalette::Disabled, QPalette::Mid, QColor(184, 184, 184));
+    palette.setColor(QPalette::All, QPalette::Shadow, QColor(118, 118, 118));
+    palette.setColor(QPalette::Disabled, QPalette::Shadow, QColor(177, 177, 177));
+    palette.setColor(QPalette::All, QPalette::Highlight, QColor(48, 140, 198));
+    palette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(145, 145, 145));
+    palette.setColor(QPalette::All, QPalette::HighlightedText, QColor(255, 255, 255));
+    palette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(255, 255, 255));
+    palette.setColor(QPalette::All, QPalette::Link, QColor(0, 0, 255));
+    palette.setColor(QPalette::Disabled, QPalette::Link, QColor(0, 0, 255));
+    palette.setColor(QPalette::All, QPalette::LinkVisited, QColor(255, 0, 255));
+    palette.setColor(QPalette::Disabled, QPalette::LinkVisited, QColor(255, 0, 255));
+  }
+  else if (style_type == StyleType::DarkGray)
+  {
+    palette.setColor(QPalette::All, QPalette::Window, QColor(50, 50, 50));
+    palette.setColor(QPalette::Disabled, QPalette::Window, QColor(55, 55, 55));
+    palette.setColor(QPalette::All, QPalette::WindowText, QColor(200, 200, 200));
+    palette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(108, 108, 108));
+    palette.setColor(QPalette::All, QPalette::Base, QColor(25, 25, 25));
+    palette.setColor(QPalette::Disabled, QPalette::Base, QColor(30, 30, 30));
+    palette.setColor(QPalette::All, QPalette::AlternateBase, QColor(38, 38, 38));
+    palette.setColor(QPalette::Disabled, QPalette::AlternateBase, QColor(42, 42, 42));
+    palette.setColor(QPalette::All, QPalette::ToolTipBase, QColor(45, 45, 45));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipBase, QColor(45, 45, 45));
+    palette.setColor(QPalette::All, QPalette::ToolTipText, QColor(200, 200, 200));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipText, QColor(200, 200, 200));
+    palette.setColor(QPalette::All, QPalette::PlaceholderText, QColor(90, 90, 90));
+    palette.setColor(QPalette::Disabled, QPalette::PlaceholderText, QColor(90, 90, 90));
+    palette.setColor(QPalette::All, QPalette::Text, QColor(200, 200, 200));
+    palette.setColor(QPalette::Disabled, QPalette::Text, QColor(108, 108, 108));
+    palette.setColor(QPalette::All, QPalette::Button, QColor(54, 54, 54));
+    palette.setColor(QPalette::Disabled, QPalette::Button, QColor(54, 54, 54));
+    palette.setColor(QPalette::All, QPalette::ButtonText, QColor(200, 200, 200));
+    palette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(108, 108, 108));
+    palette.setColor(QPalette::All, QPalette::BrightText, QColor(75, 75, 75));
+    palette.setColor(QPalette::Disabled, QPalette::BrightText, QColor(255, 255, 255));
+    palette.setColor(QPalette::All, QPalette::Light, QColor(26, 26, 26));
+    palette.setColor(QPalette::Disabled, QPalette::Light, QColor(26, 26, 26));
+    palette.setColor(QPalette::All, QPalette::Midlight, QColor(40, 40, 40));
+    palette.setColor(QPalette::Disabled, QPalette::Midlight, QColor(40, 40, 40));
+    palette.setColor(QPalette::All, QPalette::Dark, QColor(108, 108, 108));
+    palette.setColor(QPalette::Disabled, QPalette::Dark, QColor(108, 108, 108));
+    palette.setColor(QPalette::All, QPalette::Mid, QColor(71, 71, 71));
+    palette.setColor(QPalette::Disabled, QPalette::Mid, QColor(71, 71, 71));
+    palette.setColor(QPalette::All, QPalette::Shadow, QColor(25, 25, 25));
+    palette.setColor(QPalette::Disabled, QPalette::Shadow, QColor(37, 37, 37));
+    palette.setColor(QPalette::All, QPalette::Highlight, QColor(45, 140, 225));
+    palette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(45, 140, 225).darker());
+    palette.setColor(QPalette::All, QPalette::HighlightedText, QColor(255, 255, 255));
+    palette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(40, 40, 40));
+    palette.setColor(QPalette::All, QPalette::Link, QColor(40, 130, 220));
+    palette.setColor(QPalette::Disabled, QPalette::Link, QColor(40, 130, 220).darker());
+    palette.setColor(QPalette::All, QPalette::LinkVisited, QColor(110, 70, 150));
+    palette.setColor(QPalette::Disabled, QPalette::LinkVisited, QColor(110, 70, 150).darker());
+  }
+  else if (style_type == StyleType::Dark2)
+  {
+    palette.setColor(QPalette::All, QPalette::Window, QColor(22, 22, 22));
+    palette.setColor(QPalette::Disabled, QPalette::Window, QColor(30, 30, 30));
+    palette.setColor(QPalette::All, QPalette::WindowText, QColor(180, 180, 180));
+    palette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(90, 90, 90));
+    palette.setColor(QPalette::All, QPalette::Base, QColor(35, 35, 35));
+    palette.setColor(QPalette::Disabled, QPalette::Base, QColor(30, 30, 30));
+    palette.setColor(QPalette::All, QPalette::AlternateBase, QColor(40, 40, 40));
+    palette.setColor(QPalette::Disabled, QPalette::AlternateBase, QColor(35, 35, 35));
+    palette.setColor(QPalette::All, QPalette::ToolTipBase, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipBase, QColor(0, 0, 0));
+    palette.setColor(QPalette::All, QPalette::ToolTipText, QColor(170, 170, 170));
+    palette.setColor(QPalette::Disabled, QPalette::ToolTipText, QColor(170, 170, 170));
+    palette.setColor(QPalette::All, QPalette::PlaceholderText, QColor(100, 100, 100));
+    palette.setColor(QPalette::Disabled, QPalette::PlaceholderText, QColor(100, 100, 100));
+    palette.setColor(QPalette::All, QPalette::Text, QColor(200, 200, 200));
+    palette.setColor(QPalette::Disabled, QPalette::Text, QColor(90, 90, 90));
+    palette.setColor(QPalette::All, QPalette::Button, QColor(30, 30, 30));
+    palette.setColor(QPalette::Disabled, QPalette::Button, QColor(20, 20, 20));
+    palette.setColor(QPalette::All, QPalette::ButtonText, QColor(180, 180, 180));
+    palette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(90, 90, 90));
+    palette.setColor(QPalette::All, QPalette::BrightText, QColor(75, 75, 75));
+    palette.setColor(QPalette::Disabled, QPalette::BrightText, QColor(255, 255, 255));
+    palette.setColor(QPalette::All, QPalette::Light, QColor(0, 0, 0));
+    palette.setColor(QPalette::Disabled, QPalette::Light, QColor(0, 0, 0));
+    palette.setColor(QPalette::All, QPalette::Midlight, QColor(40, 40, 40));
+    palette.setColor(QPalette::Disabled, QPalette::Midlight, QColor(40, 40, 40));
+    palette.setColor(QPalette::All, QPalette::Dark, QColor(90, 90, 90));
+    palette.setColor(QPalette::Disabled, QPalette::Dark, QColor(90, 90, 90));
+    palette.setColor(QPalette::All, QPalette::Mid, QColor(60, 60, 60));
+    palette.setColor(QPalette::Disabled, QPalette::Mid, QColor(60, 60, 60));
+    palette.setColor(QPalette::All, QPalette::Shadow, QColor(10, 10, 10));
+    palette.setColor(QPalette::Disabled, QPalette::Shadow, QColor(20, 20, 20));
+    palette.setColor(QPalette::All, QPalette::Highlight, QColor(35, 130, 200));
+    palette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(35, 130, 200).darker());
+    palette.setColor(QPalette::All, QPalette::HighlightedText, QColor(240, 240, 240));
+    palette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(35, 35, 35));
+    palette.setColor(QPalette::All, QPalette::Link, QColor(40, 130, 220));
+    palette.setColor(QPalette::Disabled, QPalette::Link, QColor(40, 130, 220).darker());
+    palette.setColor(QPalette::All, QPalette::LinkVisited, QColor(110, 70, 150));
+    palette.setColor(QPalette::Disabled, QPalette::LinkVisited, QColor(110, 70, 150).darker());
+  }
+  else if (style_type == StyleType::Dark)
+  {
+    palette = qApp->style()->standardPalette();
     palette.setColor(QPalette::Window, QColor(32, 32, 32));
     palette.setColor(QPalette::WindowText, QColor(220, 220, 220));
     palette.setColor(QPalette::Base, QColor(32, 32, 32));
@@ -202,7 +318,18 @@ void Settings::ApplyStyle()
     palette.setColor(QPalette::HighlightedText, QColor(255, 255, 255));
     palette.setColor(QPalette::Link, QColor(100, 160, 220));
     palette.setColor(QPalette::LinkVisited, QColor(100, 160, 220));
-    qApp->setPalette(palette);
+
+    QFile file(QStringLiteral(":/dolphin_dark_win/dark.qss"));
+    if (file.open(QFile::ReadOnly))
+      style_sheet = QString::fromUtf8(file.readAll().data());
+  }
+  else if (style_type == StyleType::User)
+  {
+    const QString stylesheet_name{GetUserStyleName()};
+    const QDir directory(QString::fromStdString(File::GetUserPath(D_STYLES_IDX)));
+    QFile stylesheet(directory.filePath(stylesheet_name));
+    if (stylesheet.open(QFile::ReadOnly))
+      style_sheet = QString::fromUtf8(stylesheet.readAll().data());
   }
   else
   {
@@ -210,12 +337,12 @@ void Settings::ApplyStyle()
     if (s_default_palette)
       qApp->setPalette(*s_default_palette);
   }
-#endif
 
   // Define tooltips style if not already defined
-  if (!stylesheet_contents.contains(QStringLiteral("QToolTip"), Qt::CaseSensitive))
+  if (!style_sheet.contains(QStringLiteral("QToolTip")))
   {
-    const QPalette& palette = qApp->palette();
+    const int tool_tip_padding{QFontMetrics(QFont()).height() / 3};
+
     QColor window_color;
     QColor text_color;
     QColor unused_text_emphasis_color;
@@ -223,16 +350,24 @@ void Settings::ApplyStyle()
     GetToolTipStyle(window_color, text_color, unused_text_emphasis_color, border_color, palette,
                     palette);
 
-    const auto tooltip_stylesheet =
-        QStringLiteral("QToolTip { background-color: #%1; color: #%2; padding: 8px; "
-                       "border: 1px; border-style: solid; border-color: #%3; }")
-            .arg(window_color.rgba(), 0, 16)
-            .arg(text_color.rgba(), 0, 16)
-            .arg(border_color.rgba(), 0, 16);
-    stylesheet_contents.append(QStringLiteral("%1").arg(tooltip_stylesheet));
+    const QString tool_tip_style_sheet{QStringLiteral(R"(
+      QToolTip {
+        padding: %1px;
+        color: %2;
+        border: 1px solid %3;
+        background: %4;
+      }
+    )")
+                                           .arg(tool_tip_padding)
+                                           .arg(text_color.name())
+                                           .arg(border_color.name())
+                                           .arg(window_color.name())};
+
+    style_sheet += tool_tip_style_sheet;
   }
 
-  qApp->setStyleSheet(stylesheet_contents);
+  qApp->setPalette(palette);
+  qApp->setStyleSheet(style_sheet);
 }
 
 Settings::StyleType Settings::GetStyleType() const

Source/Core/DolphinQt/Settings.h

@@ -66,9 +66,11 @@ public:
     Light = 1,
     Dark = 2,
     User = 3,
+    DarkGray = 4,
+    Dark2 = 5,
 
     MinValue = 0,
-    MaxValue = 3,
+    MaxValue = 5,
   };
 
   void SetStyleType(StyleType type);

Source/Core/DolphinQt/Settings/InterfacePane.cpp

@@ -150,12 +150,10 @@ void InterfacePane::CreateUI()
   auto userstyle_search_results = Common::DoFileSearch({File::GetUserPath(D_STYLES_IDX)});
 
   m_combobox_userstyle->addItem(tr("(System)"), static_cast<int>(Settings::StyleType::System));
-
-  // TODO: Support forcing light/dark on other OSes too.
-#ifdef _WIN32
   m_combobox_userstyle->addItem(tr("(Light)"), static_cast<int>(Settings::StyleType::Light));
+  m_combobox_userstyle->addItem(tr("(Dark Gray)"), static_cast<int>(Settings::StyleType::DarkGray));
   m_combobox_userstyle->addItem(tr("(Dark)"), static_cast<int>(Settings::StyleType::Dark));
-#endif
+  m_combobox_userstyle->addItem(tr("(Dark 2)"), static_cast<int>(Settings::StyleType::Dark2));
 
   for (const std::string& path : userstyle_search_results)
   {