fix drawer background

example/lib/main.dart

@@ -185,6 +185,8 @@ class _HomePageState extends State<HomePage> {
 
   Drawer _buildDrawer(BuildContext context, User user) {
     return Drawer(
+      child: Container(
+        color: StreamChatTheme.of(context).colorTheme.white,
         child: SafeArea(
           child: Padding(
             padding: EdgeInsets.only(
@@ -310,6 +312,7 @@ class _HomePageState extends State<HomePage> {
             ),
           ),
         ),
+      ),
     );
   }
 }