diff --git a/src/Ursa.Themes.Semi/Index.axaml.cs b/src/Ursa.Themes.Semi/Index.axaml.cs
index 2112116..a478b5a 100644
--- a/src/Ursa.Themes.Semi/Index.axaml.cs
+++ b/src/Ursa.Themes.Semi/Index.axaml.cs
@@ -1,4 +1,5 @@
 using System.Globalization;
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
 using Avalonia.Styling;
@@ -7,32 +8,30 @@ using Ursa.Themes.Semi.Locale;
 namespace Ursa.Themes.Semi;
 
 /// <summary>
-/// Notice: Don't set Locale if your app is in InvariantGlobalization mode.
+///     Notice: Don't set Locale if your app is in InvariantGlobalization mode.
 /// </summary>
-public class SemiTheme: Styles
+public class SemiTheme : Styles
 {
-    public static ThemeVariant Aquatic => new ThemeVariant(nameof(Aquatic), ThemeVariant.Dark);
-    public static ThemeVariant Desert => new ThemeVariant(nameof(Desert), ThemeVariant.Light);
-    public static ThemeVariant Dusk => new ThemeVariant(nameof(Dusk), ThemeVariant.Dark);
-    public static ThemeVariant NightSky => new ThemeVariant(nameof(NightSky), ThemeVariant.Dark);
-    
-    private static readonly Lazy<Dictionary<CultureInfo, ResourceDictionary>> _localeToResource = new Lazy<Dictionary<CultureInfo, ResourceDictionary>>(
-        () => new Dictionary<CultureInfo, ResourceDictionary>
-        {
-            { new CultureInfo("zh-CN"), new zh_cn() },
-            { new CultureInfo("en-US"), new en_us() },
-        });
-    
+    private static readonly Dictionary<CultureInfo, ResourceDictionary> _localeToResource = new()
+    {
+        { new CultureInfo("zh-CN"), new zh_cn() },
+        { new CultureInfo("en-US"), new en_us() }
+    };
+
     private static readonly ResourceDictionary _defaultResource = new zh_cn();
     
-    private readonly IServiceProvider? _sp;
+    private CultureInfo? _locale;
+
     public SemiTheme(IServiceProvider? provider = null)
     {
-        _sp = provider;
         AvaloniaXamlLoader.Load(provider, this);
     }
 
-    private CultureInfo? _locale;
+    public static ThemeVariant Aquatic => new(nameof(Aquatic), ThemeVariant.Dark);
+    public static ThemeVariant Desert => new(nameof(Desert), ThemeVariant.Light);
+    public static ThemeVariant Dusk => new(nameof(Dusk), ThemeVariant.Dark);
+    public static ThemeVariant NightSky => new(nameof(NightSky), ThemeVariant.Dark);
+
     public CultureInfo? Locale
     {
         get => _locale;
@@ -43,33 +42,34 @@ public class SemiTheme: Styles
                 _locale = value;
                 var resource = TryGetLocaleResource(value);
                 if (resource is null) return;
-                foreach (var kv in resource)
-                {
-                    this.Resources.Add(kv);
-                }
+                foreach (var kv in resource) Resources.Add(kv);
             }
             catch
             {
                 _locale = CultureInfo.InvariantCulture;
             }
-            
         }
     }
-    
+
     private static ResourceDictionary? TryGetLocaleResource(CultureInfo? locale)
     {
-        if (Equals(locale, CultureInfo.InvariantCulture))
-        {
-            return _defaultResource;
-        }
-        if (locale is null)
-        {
-            return _localeToResource.Value[new CultureInfo("zh-CN")];
-        }
-        if (_localeToResource.Value.TryGetValue(locale, out var resource))
-        {
-            return resource;
-        }
-        return _localeToResource.Value[new CultureInfo("zh-CN")];
+        if (Equals(locale, CultureInfo.InvariantCulture)) return _defaultResource;
+        if (locale is null) return _localeToResource[new CultureInfo("zh-CN")];
+        if (_localeToResource.TryGetValue(locale, out var resource)) return resource;
+        return _localeToResource[new CultureInfo("zh-CN")];
+    }
+
+    public static void OverrideLocaleResources(Application application, CultureInfo? culture)
+    {
+        if (culture is null) return;
+        if (!_localeToResource.TryGetValue(culture, out var resources)) return;
+        foreach (var kv in resources) application.Resources[kv.Key] = kv.Value;
+    }
+
+    public static void OverrideLocaleResources(StyledElement element, CultureInfo? culture)
+    {
+        if (culture is null) return;
+        if (!_localeToResource.TryGetValue(culture, out var resources)) return;
+        foreach (var kv in resources) element.Resources[kv.Key] = kv.Value;
     }
 }
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