diff --git a/App.xaml.cs b/App.xaml.cs
index 2a969be..cd85398 100644
--- a/App.xaml.cs
+++ b/App.xaml.cs
@@ -18,9 +18,9 @@ public partial class App : Application
         #region Primary Color
         PaletteHelper paletteHelper = new();
         Theme newTheme = paletteHelper.GetTheme();
-        System.Drawing.Color newPrimaryColor = Settings.Default.PrimaryColor;
+        Color newPrimaryColor = Color.FromRgb(Settings.Default.PrimaryColor.R, Settings.Default.PrimaryColor.G, Settings.Default.PrimaryColor.B);
 
-        newTheme.SetPrimaryColor(Color.FromRgb(newPrimaryColor.R, newPrimaryColor.G, newPrimaryColor.B));
+        newTheme.SetPrimaryColor(newPrimaryColor);
         paletteHelper.SetTheme(newTheme);
         #endregion Primary Color
 
diff --git a/Consts/AboutConst.cs b/Consts/AboutConst.cs
index 035eb78..1cddb02 100644
--- a/Consts/AboutConst.cs
+++ b/Consts/AboutConst.cs
@@ -16,4 +16,5 @@ internal class AboutConst : AboutMultilangConst
     public static string AgreementButtonUrl => "https://thoughts.teambition.com/share/6264edd78adeb10041b92fdb#title=Sheas_Cealer_使用协议";
 
     internal static string ReleaseApiUrl => "https://api.github.com/repos/SpaceTimee/Sheas-Cealer/releases/latest";
+    internal static string ReleaseApiUserAgent => "Sheas-Cealer";
 }
\ No newline at end of file
diff --git a/Preses/SettingsPres.cs b/Preses/SettingsPres.cs
index 52185f9..2a051f3 100644
--- a/Preses/SettingsPres.cs
+++ b/Preses/SettingsPres.cs
@@ -49,8 +49,8 @@ internal partial class SettingsPres : GlobalPres
     private static bool? isLightWeight = null;
     partial void OnIsLightWeightChanged(bool? value)
     {
-        Style newWindowStyle = new(typeof(Window), Application.Current.Resources["CommonWindow"] as Style);
         FontWeight newWeight = value.HasValue ? value.Value ? FontWeights.Light : FontWeights.Bold : FontWeights.Regular;
+        Style newWindowStyle = new(typeof(Window), Application.Current.Resources["CommonWindow"] as Style);
 
         newWindowStyle.Setters.Add(new Setter(Window.FontWeightProperty, newWeight));
         Application.Current.Resources["CommonWindow"] = newWindowStyle;
diff --git a/Wins/AboutWin.xaml.cs b/Wins/AboutWin.xaml.cs
index 32b42bf..4d29f1d 100644
--- a/Wins/AboutWin.xaml.cs
+++ b/Wins/AboutWin.xaml.cs
@@ -35,7 +35,7 @@ public partial class AboutWin : Window
         {
             try
             {
-                AboutClient.DefaultRequestHeaders.Add("User-Agent", "Sheas-Cealer");
+                AboutClient.DefaultRequestHeaders.Add("User-Agent", AboutConst.ReleaseApiUserAgent);
 
                 JsonElement releaseInfoObject = JsonDocument.Parse(await Http.GetAsync<string>(AboutConst.ReleaseApiUrl, AboutClient)).RootElement;
 
diff --git a/Wins/MainWin.xaml.cs b/Wins/MainWin.xaml.cs
index 6367dc8..626dc3a 100644
--- a/Wins/MainWin.xaml.cs
+++ b/Wins/MainWin.xaml.cs
@@ -489,12 +489,9 @@ public partial class MainWin : Window
                 PaletteHelper paletteHelper = new();
                 Theme newTheme = paletteHelper.GetTheme();
                 Color newPrimaryColor = Color.FromRgb((byte)random.Next(256), (byte)random.Next(256), (byte)random.Next(256));
-                Color newSecondaryColor = random.Next(3) == 0 ? newPrimaryColor with { R = (byte)((newPrimaryColor.R + 109) % 256) } :
-                    random.Next(2) == 0 ? newPrimaryColor with { G = (byte)((newPrimaryColor.G + 109) % 256) } : newPrimaryColor with { B = (byte)((newPrimaryColor.B + 109) % 256) };
                 bool isLightTheme = random.Next(2) == 0;
 
                 newTheme.SetPrimaryColor(newPrimaryColor);
-                newTheme.SetSecondaryColor(newSecondaryColor);
                 newTheme.SetBaseTheme(isLightTheme ? BaseTheme.Light : BaseTheme.Dark);
                 paletteHelper.SetTheme(newTheme);