diff --git a/src/citron/configuration/configure_per_game.h b/src/citron/configuration/configure_per_game.h
index 5e726d401..3591347fb 100644
--- a/src/citron/configuration/configure_per_game.h
+++ b/src/citron/configuration/configure_per_game.h
@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -19,11 +20,11 @@
 #include "citron/configuration/shared_translation.h"
 
 namespace Core {
-class System;
+    class System;
 }
 
 namespace InputCommon {
-class InputSubsystem;
+    class InputSubsystem;
 }
 
 class ConfigurePerGameAddons;
@@ -40,9 +41,10 @@ class QStandardItem;
 class QStandardItemModel;
 class QTreeView;
 class QVBoxLayout;
+class QTimer; // Forward declaration for the timer
 
 namespace Ui {
-class ConfigurePerGame;
+    class ConfigurePerGame;
 }
 
 class ConfigurePerGame : public QDialog {
@@ -55,25 +57,27 @@ public:
                               Core::System& system_);
     ~ConfigurePerGame() override;
 
-    /// Save all button configurations to settings file
     void ApplyConfiguration();
-
     void LoadFromFile(FileSys::VirtualFile file_);
 
+public slots:
+    void accept() override;
+
 private:
     void changeEvent(QEvent* event) override;
     void RetranslateUI();
-
     void HandleApplyButtonClicked();
-
     void LoadConfiguration();
 
+    // New, efficient theme update functions
+    void ApplyStaticTheme();
+    void UpdateTheme();
+
     std::unique_ptr<Ui::ConfigurePerGame> ui;
     FileSys::VirtualFile file;
     u64 title_id;
 
     QGraphicsScene* scene;
-
     std::unique_ptr<QtConfig> game_config;
 
     Core::System& system;
@@ -88,4 +92,7 @@ private:
     std::unique_ptr<ConfigureInputPerGame> input_tab;
     std::unique_ptr<ConfigureLinuxTab> linux_tab;
     std::unique_ptr<ConfigureSystem> system_tab;
+
+    QTimer* rainbow_timer;
+    float rainbow_hue = 0.0f;
 };