diff --git a/src/Launcher/Sucrose.Launcher/App.xaml.cs b/src/Launcher/Sucrose.Launcher/App.xaml.cs
index 680085a95..9cbf7cecd 100644
--- a/src/Launcher/Sucrose.Launcher/App.xaml.cs
+++ b/src/Launcher/Sucrose.Launcher/App.xaml.cs
@@ -110,7 +110,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.LauncherLogManager.LogFile();
 
-                switch (SSLMM.Theme)
+                switch (SSLMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.Aurora/App.xaml.cs b/src/Live/Sucrose.Live.Aurora/App.xaml.cs
index 6aeb1f928..456ae9242 100644
--- a/src/Live/Sucrose.Live.Aurora/App.xaml.cs
+++ b/src/Live/Sucrose.Live.Aurora/App.xaml.cs
@@ -104,7 +104,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.AuroraLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.CefSharp/App.xaml.cs b/src/Live/Sucrose.Live.CefSharp/App.xaml.cs
index 9323cca10..fe4d8fa6f 100644
--- a/src/Live/Sucrose.Live.CefSharp/App.xaml.cs
+++ b/src/Live/Sucrose.Live.CefSharp/App.xaml.cs
@@ -114,7 +114,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.CefSharpLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.MpvPlayer/App.xaml.cs b/src/Live/Sucrose.Live.MpvPlayer/App.xaml.cs
index a94b6c316..1ed86578a 100644
--- a/src/Live/Sucrose.Live.MpvPlayer/App.xaml.cs
+++ b/src/Live/Sucrose.Live.MpvPlayer/App.xaml.cs
@@ -104,7 +104,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.MpvPlayerLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.Nebula/App.xaml.cs b/src/Live/Sucrose.Live.Nebula/App.xaml.cs
index 90f98d1a6..0ef3be3b5 100644
--- a/src/Live/Sucrose.Live.Nebula/App.xaml.cs
+++ b/src/Live/Sucrose.Live.Nebula/App.xaml.cs
@@ -104,7 +104,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.NebulaLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.Vexana/App.xaml.cs b/src/Live/Sucrose.Live.Vexana/App.xaml.cs
index af4b716f9..03a88062f 100644
--- a/src/Live/Sucrose.Live.Vexana/App.xaml.cs
+++ b/src/Live/Sucrose.Live.Vexana/App.xaml.cs
@@ -104,7 +104,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.VexanaLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Live/Sucrose.Live.WebView/App.xaml.cs b/src/Live/Sucrose.Live.WebView/App.xaml.cs
index 0443de853..104bbc8e8 100644
--- a/src/Live/Sucrose.Live.WebView/App.xaml.cs
+++ b/src/Live/Sucrose.Live.WebView/App.xaml.cs
@@ -114,7 +114,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.WebViewLiveLogManager.LogFile();
 
-                switch (SSEMM.Theme)
+                switch (SSEMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Portal/Sucrose.Portal/App.xaml.cs b/src/Portal/Sucrose.Portal/App.xaml.cs
index 89bffc04d..a367bbf50 100644
--- a/src/Portal/Sucrose.Portal/App.xaml.cs
+++ b/src/Portal/Sucrose.Portal/App.xaml.cs
@@ -202,7 +202,7 @@ protected void Message(string Message)
 
                 string Path = SMMI.PortalLogManager.LogFile();
 
-                switch (SPMM.Theme)
+                switch (SPMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path);
diff --git a/src/Portal/Sucrose.Portal/Manage/Manager.cs b/src/Portal/Sucrose.Portal/Manage/Manager.cs
index 5daf3d072..df86a573e 100644
--- a/src/Portal/Sucrose.Portal/Manage/Manager.cs
+++ b/src/Portal/Sucrose.Portal/Manage/Manager.cs
@@ -55,9 +55,9 @@ internal static class Manager
 
         public static SSDEDT DisplayType => SMMI.EngineSettingManager.GetSetting(SMC.DisplayType, SSDEDT.Screen);
 
-        public static SSDEST StretchType => SMMI.EngineSettingManager.GetSetting(SMC.StretchType, SSDEST.Fill);
+        public static SEWTT ThemeType => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
 
-        public static SEWTT Theme => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
+        public static SSDEST StretchType => SMMI.EngineSettingManager.GetSetting(SMC.StretchType, SSDEST.Fill);
 
         public static WindowBackdropType DefaultBackdropType => WindowBackdropType.None;
 
diff --git a/src/Portal/Sucrose.Portal/ViewModels/Pages/Setting/GeneralSettingViewModel.cs b/src/Portal/Sucrose.Portal/ViewModels/Pages/Setting/GeneralSettingViewModel.cs
index bc69f3a7a..4616ad352 100644
--- a/src/Portal/Sucrose.Portal/ViewModels/Pages/Setting/GeneralSettingViewModel.cs
+++ b/src/Portal/Sucrose.Portal/ViewModels/Pages/Setting/GeneralSettingViewModel.cs
@@ -485,7 +485,7 @@ private void BackdropSelected(int Index)
                 ApplicationTheme Theme = ApplicationTheme.Dark;
                 WindowBackdropType Type = (WindowBackdropType)Index;
 
-                if (SPMM.Theme == SEWTT.Light)
+                if (SPMM.ThemeType == SEWTT.Light)
                 {
                     Theme = ApplicationTheme.Light;
                 }
diff --git a/src/Portal/Sucrose.Portal/ViewModels/Windows/MainWindowViewModel.cs b/src/Portal/Sucrose.Portal/ViewModels/Windows/MainWindowViewModel.cs
index 7202e27fd..0bdb4f891 100644
--- a/src/Portal/Sucrose.Portal/ViewModels/Windows/MainWindowViewModel.cs
+++ b/src/Portal/Sucrose.Portal/ViewModels/Windows/MainWindowViewModel.cs
@@ -185,7 +185,7 @@ private static WindowBackdropType GetWindowBackdropType()
         [RelayCommand]
         private void OnChangeTheme()
         {
-            if (SPMM.Theme == SEWTT.Dark)
+            if (SPMM.ThemeType == SEWTT.Dark)
             {
                 SMMI.GeneralSettingManager.SetSetting(SMC.ThemeType, SEWTT.Light);
                 WUAT.Apply(WUAAT.Light, GetWindowBackdropType(), true, true);
diff --git a/src/Portal/Sucrose.Portal/Views/Windows/MainWindow.xaml.cs b/src/Portal/Sucrose.Portal/Views/Windows/MainWindow.xaml.cs
index 37a1fd3c8..2bfc4e519 100644
--- a/src/Portal/Sucrose.Portal/Views/Windows/MainWindow.xaml.cs
+++ b/src/Portal/Sucrose.Portal/Views/Windows/MainWindow.xaml.cs
@@ -15,6 +15,9 @@
 using SSDEACT = Sucrose.Shared.Dependency.Enum.ArgumentCommandsType;
 using WUAAT = Wpf.Ui.Appearance.ApplicationTheme;
 using WUAT = Wpf.Ui.Appearance.ApplicationThemeManager;
+using SWHWT = Skylark.Wing.Helper.WindowsTheme;
+using SMMI = Sucrose.Manager.Manage.Internal;
+using SMC = Sucrose.Memory.Constant;
 
 namespace Sucrose.Portal.Views.Windows
 {
@@ -32,15 +35,33 @@ public MainWindow(SPVMWMWVM ViewModel, INavigationService NavigationService, ISe
 
             InitializeComponent();
 
-            if (SPMM.Theme == SEWTT.Dark)
+            if (SPMM.BackdropType == WindowBackdropType.Auto)
             {
-                WUAT.Apply(WUAAT.Dark);
-                Light.Visibility = Visibility.Collapsed;
+                if (SWHWT.GetTheme() == SEWTT.Dark)
+                {
+                    WUAT.Apply(WUAAT.Dark);
+                    Light.Visibility = Visibility.Collapsed;
+                    SMMI.GeneralSettingManager.SetSetting(SMC.ThemeType, SEWTT.Dark);
+                }
+                else
+                {
+                    WUAT.Apply(WUAAT.Light);
+                    Dark.Visibility = Visibility.Collapsed;
+                    SMMI.GeneralSettingManager.SetSetting(SMC.ThemeType, SEWTT.Light);
+                }
             }
             else
             {
-                WUAT.Apply(WUAAT.Light);
-                Dark.Visibility = Visibility.Collapsed;
+                if (SPMM.ThemeType == SEWTT.Dark)
+                {
+                    WUAT.Apply(WUAAT.Dark);
+                    Light.Visibility = Visibility.Collapsed;
+                }
+                else
+                {
+                    WUAT.Apply(WUAAT.Light);
+                    Dark.Visibility = Visibility.Collapsed;
+                }
             }
 
             RootView.SetServiceProvider(ServiceProvider);
diff --git a/src/Shared/Engine/Sucrose.Shared.Engine/Manage/Manager.cs b/src/Shared/Engine/Sucrose.Shared.Engine/Manage/Manager.cs
index 857f11ccf..7f1d0bb8d 100644
--- a/src/Shared/Engine/Sucrose.Shared.Engine/Manage/Manager.cs
+++ b/src/Shared/Engine/Sucrose.Shared.Engine/Manage/Manager.cs
@@ -27,9 +27,9 @@ internal static class Manager
 
         public static SSDEDT DisplayType => SMMI.EngineSettingManager.GetSetting(SMC.DisplayType, SSDEDT.Screen);
 
-        public static SSDEST StretchType => SMMI.EngineSettingManager.GetSetting(SMC.StretchType, SSDEST.Fill);
+        public static SEWTT ThemeType => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
 
-        public static SEWTT Theme => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
+        public static SSDEST StretchType => SMMI.EngineSettingManager.GetSetting(SMC.StretchType, SSDEST.Fill);
 
         public static SSDEST DefaultStretchType => SSDEST.None;
 
diff --git a/src/Shared/Sucrose.Shared.Launcher/Command/Report.cs b/src/Shared/Sucrose.Shared.Launcher/Command/Report.cs
index 085398b0c..cb4be2693 100644
--- a/src/Shared/Sucrose.Shared.Launcher/Command/Report.cs
+++ b/src/Shared/Sucrose.Shared.Launcher/Command/Report.cs
@@ -14,7 +14,7 @@ public static void Command()
             {
                 SSLMI.ReportBox = false;
 
-                switch (SSLMM.Theme)
+                switch (SSLMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSLVDRB DarkReportBox = new();
diff --git a/src/Shared/Sucrose.Shared.Launcher/Manage/Manager.cs b/src/Shared/Sucrose.Shared.Launcher/Manage/Manager.cs
index 5b5acf61a..fa1395254 100644
--- a/src/Shared/Sucrose.Shared.Launcher/Manage/Manager.cs
+++ b/src/Shared/Sucrose.Shared.Launcher/Manage/Manager.cs
@@ -8,7 +8,7 @@ namespace Sucrose.Shared.Launcher.Manage
 {
     internal static class Manager
     {
-        public static SEWTT Theme => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
+        public static SEWTT ThemeType => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
 
         public static Mutex Mutex => new(true, SMR.LauncherMutex);
     }
diff --git a/src/Shared/Sucrose.Shared.Launcher/Manager/TrayIconManager.cs b/src/Shared/Sucrose.Shared.Launcher/Manager/TrayIconManager.cs
index 66cda6cec..e0d918cfc 100644
--- a/src/Shared/Sucrose.Shared.Launcher/Manager/TrayIconManager.cs
+++ b/src/Shared/Sucrose.Shared.Launcher/Manager/TrayIconManager.cs
@@ -60,7 +60,7 @@ public void Initialize()
 
             SSLHR.Corner(ContextMenu);
 
-            if (SSLMM.Theme == SEWTT.Dark)
+            if (SSLMM.ThemeType == SEWTT.Dark)
             {
                 ContextMenu.Renderer = new SSLRDR();
             }
@@ -71,7 +71,7 @@ public void Initialize()
 
             ContextMenu.Items.Add(SSRER.GetValue("Launcher", "OpenText"), Image.FromFile(SSSHA.Get(SSRER.GetValue("Launcher", "OpenIcon"))), CommandInterface);
 
-            SSLSSS Separator1 = new(SSLMM.Theme);
+            SSLSSS Separator1 = new(SSLMM.ThemeType);
 
             if (SSSHL.Run() && (!SMMM.PausePerformance || !SSSHP.Work(SSSMI.Backgroundog)))
             {
@@ -116,14 +116,14 @@ public void Initialize()
                 }
             }
 
-            SSLSSS Separator2 = new(SSLMM.Theme);
+            SSLSSS Separator2 = new(SSLMM.ThemeType);
             ContextMenu.Items.Add(Separator2.Strip);
 
             ContextMenu.Items.Add(SSRER.GetValue("Launcher", "SettingText"), Image.FromFile(SSSHA.Get(SSRER.GetValue("Launcher", "SettingIcon"))), CommandSetting);
             ContextMenu.Items.Add(SSRER.GetValue("Launcher", "ReportText"), Image.FromFile(SSSHA.Get(SSRER.GetValue("Launcher", "ReportIcon"))), CommandReport);
             ContextMenu.Items.Add(SSRER.GetValue("Launcher", "UpdateText"), Image.FromFile(SSSHA.Get(SSRER.GetValue("Launcher", "UpdateIcon"))), CommandUpdate);
 
-            SSLSSS Separator3 = new(SSLMM.Theme);
+            SSLSSS Separator3 = new(SSLMM.ThemeType);
             ContextMenu.Items.Add(Separator3.Strip);
 
             ContextMenu.Items.Add(SSRER.GetValue("Launcher", "ExitText"), Image.FromFile(SSSHA.Get(SSRER.GetValue("Launcher", "ExitIcon"))), CommandClose);
diff --git a/src/Update/Sucrose.Update/App.xaml.cs b/src/Update/Sucrose.Update/App.xaml.cs
index d226b7446..3982dd827 100644
--- a/src/Update/Sucrose.Update/App.xaml.cs
+++ b/src/Update/Sucrose.Update/App.xaml.cs
@@ -111,7 +111,7 @@ protected void Close()
 
         internal void Info(SSDEUT Type)
         {
-            switch (SUMM.Theme)
+            switch (SUMM.ThemeType)
             {
                 case SEWTT.Dark:
                     SUVDIB DarkInfoBox = new(Type);
@@ -134,7 +134,7 @@ protected void Message(string Message)
                 string Path = SMMI.UpdateLogManager.LogFile();
                 string Text = SSRER.GetValue("Update", "HelpText");
 
-                switch (SUMM.Theme)
+                switch (SUMM.ThemeType)
                 {
                     case SEWTT.Dark:
                         SSWDEMB DarkMessageBox = new(Message, Path, Source, Text)
@@ -306,7 +306,7 @@ protected async void Configure()
 
                     if (Result == SSDECT.Pass)
                     {
-                        switch (SUMM.Theme)
+                        switch (SUMM.ThemeType)
                         {
                             case SEWTT.Dark:
                                 SUVDUB DarkUpdateBox = new(Bundle);
diff --git a/src/Update/Sucrose.Update/Manage/Manager.cs b/src/Update/Sucrose.Update/Manage/Manager.cs
index 715c19035..3fe7d9133 100644
--- a/src/Update/Sucrose.Update/Manage/Manager.cs
+++ b/src/Update/Sucrose.Update/Manage/Manager.cs
@@ -11,7 +11,7 @@ internal static class Manager
     {
         public static string CachePath => Path.Combine(SMR.AppDataPath, SMR.AppName, SMR.CacheFolder, SMR.Bundle);
 
-        public static SEWTT Theme => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
+        public static SEWTT ThemeType => SMMI.GeneralSettingManager.GetSetting(SMC.ThemeType, SWHWT.GetTheme());
 
         public static Mutex Mutex => new(true, SMR.UpdateMutex);
     }