Fix Navbar color (#136)

manager/app/src/main/java/me/weishu/kernelsu/ui/theme/Theme.kt

@@ -10,6 +10,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.unit.dp
 import androidx.core.view.ViewCompat
 import com.google.accompanist.systemuicontroller.rememberSystemUiController
 
@@ -47,6 +48,12 @@ fun KernelSUTheme(
             color = colorScheme.surface,
             darkIcons = !darkTheme
         )
+
+        // To match the App Navbar color
+        systemUiController.setNavigationBarColor(
+            color = colorScheme.surfaceColorAtElevation(8.dp),
+            darkIcons = !darkTheme,
+        )
     }
 
     MaterialTheme(
@@ -54,4 +61,4 @@ fun KernelSUTheme(
         typography = Typography,
         content = content
     )
-}
+}