diff --git a/packages/AtomUI/AppBuilderExtensions.cs b/packages/AtomUI/AppBuilderExtensions.cs
index 728a4cf29..57d76f0af 100644
--- a/packages/AtomUI/AppBuilderExtensions.cs
+++ b/packages/AtomUI/AppBuilderExtensions.cs
@@ -1,16 +1,19 @@
-using Avalonia;
+using System.Globalization;
+using AtomUI.Utils;
+using Avalonia;
 
 namespace AtomUI.Theme;
 
 public static class AtomUIExtensions
 {
-    public static ThemeManagerBuilder CreateThemeManagerBuilder(this AppBuilder builder)
-    {
-        return new ThemeManagerBuilder(builder);
-    }
-
-    public static AppBuilder UseAtomUI(this AppBuilder builder, ThemeManagerBuilder themeManagerBuilder)
+    public static AppBuilder UseAtomUI(this AppBuilder builder, Action<ThemeManagerBuilder>? themeConfigureAction = null)
     {
+        var themeManagerBuilder = new ThemeManagerBuilder(builder);
+        themeManagerBuilder.WithDefaultCultureInfo(new CultureInfo(LanguageCode.en_US));
+        themeManagerBuilder.WithDefaultTheme(ThemeManager.DEFAULT_THEME_ID);
+            
+        themeConfigureAction?.Invoke(themeManagerBuilder);
+        
         builder.AfterSetup(_ =>
         {
             var themeManager = themeManagerBuilder.Build();
@@ -21,6 +24,7 @@ public static class AtomUIExtensions
             themeManager.SetActiveTheme(themeManagerBuilder.ThemeId);
             builder.Instance!.Styles.Add(themeManager);
             themeManager.NotifyInitialized();
+            themeManagerBuilder = null;
         });
         return builder.WithInterFont();
     }
diff --git a/src/AtomUI.Theme/IThemeManagerBuilder.cs b/src/AtomUI.Theme/IThemeManagerBuilder.cs
index d2608b1db..02e3d206a 100644
--- a/src/AtomUI.Theme/IThemeManagerBuilder.cs
+++ b/src/AtomUI.Theme/IThemeManagerBuilder.cs
@@ -17,6 +17,6 @@ public interface IThemeManagerBuilder
     void AddControlThemesProvider(IControlThemesProvider controlThemesProvider);
     void AddLanguageProviders(AbstractLanguageProvider languageProvider);
     
-    void UseTheme(string themeId);
-    void UseCultureInfo(CultureInfo cultureInfo);
+    void WithDefaultTheme(string themeId);
+    void WithDefaultCultureInfo(CultureInfo cultureInfo);
 }
\ No newline at end of file
diff --git a/src/AtomUI.Theme/ThemeManagerBuilder.cs b/src/AtomUI.Theme/ThemeManagerBuilder.cs
index 872f206dc..130a4ce93 100644
--- a/src/AtomUI.Theme/ThemeManagerBuilder.cs
+++ b/src/AtomUI.Theme/ThemeManagerBuilder.cs
@@ -14,7 +14,7 @@ public class ThemeManagerBuilder : IThemeManagerBuilder
 
     public CultureInfo CultureInfo { get; private set; }
     public string ThemeId { get; private set; }
-    public AppBuilder AppBuilder { get; private set; }
+    public AppBuilder AppBuilder { get; }
 
     private HashSet<string> _registeredTokenTypes;
     private HashSet<string> _registeredControlThemesProviders;
@@ -73,12 +73,12 @@ public class ThemeManagerBuilder : IThemeManagerBuilder
         _registeredLanguageProviders.Add(id);
     }
 
-    public void UseTheme(string themeId)
+    public void WithDefaultTheme(string themeId)
     {
         ThemeId = themeId;
     }
 
-    public void UseCultureInfo(CultureInfo cultureInfo)
+    public void WithDefaultCultureInfo(CultureInfo cultureInfo)
     {
         CultureInfo = cultureInfo;
     }