diff --git a/app/src/main/java/com/example/login_v3/MainActivity.kt b/app/src/main/java/com/example/login_v3/MainActivity.kt
index 734c7f2..c51f2e3 100644
--- a/app/src/main/java/com/example/login_v3/MainActivity.kt
+++ b/app/src/main/java/com/example/login_v3/MainActivity.kt
@@ -6,6 +6,8 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import com.example.login_v3.auth.HealthCheckScreen
+import com.example.login_v3.ui.theme.AppTheme
+import com.example.login_v3.ui.theme.Login_V3Theme
 import dagger.hilt.android.AndroidEntryPoint
 
 @AndroidEntryPoint
@@ -16,7 +18,9 @@ class MainActivity : ComponentActivity() {
 
         installSplashScreen()
         setContent {
-            Technologia()
+            Login_V3Theme(appTheme = AppTheme.DARK) {
+                Technologia()
+            }
         }
     }
 }
diff --git a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
index a4b5347..414cdb9 100644
--- a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
+++ b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
@@ -24,7 +24,11 @@ fun setting_theme_page(
     val selectedTheme = viewModel.currentTheme.value
 
     Column(modifier = Modifier.padding(16.dp)) {
-        Text(text = "主題設定", style = MaterialTheme.typography.headlineMedium)
+        Text(
+            text = "主題設定",
+            style = MaterialTheme.typography.headlineMedium,
+            color = MaterialTheme.colorScheme.primary
+        )
 
         Spacer(modifier = Modifier.height(8.dp))