颜色，基础组件重新封装，降低理解难度，分层更明显。入口更抽象

apps/im_app/lib/features/settings/view/widgets/theme_option_tile.dart

@@ -29,11 +29,11 @@ class ThemeOptionTile extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final s = context.styles;
+    final c = context.colors;
 
     return ListTile(
       title: Text(label),
-      trailing: isSelected ? Icon(Icons.check, color: s.primary) : null,
+      trailing: isSelected ? Icon(Icons.check, color: c.brandPrimary) : null,
       onTap: onTap,
     );
   }