如何更改Scaffold小部件的抽屉颜色

import 'package:flutter/material.dart';

final ThemeData myTheme = ThemeData(
  primarySwatch: Colors.blue, // 设置主题色
  accentColor: Colors.green, // 设置强调色
  scaffoldBackgroundColor: Colors.white, // 设置Scaffold背景色
  // 其他主题属性...
);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: myTheme, // 使用自定义主题数据
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My App'),
      ),
      drawer: Drawer(
        child: ListView(
          padding: EdgeInsets.zero,
          children: <Widget>[
            DrawerHeader(
              decoration: BoxDecoration(
                color: Colors.orange, // 设置抽屉颜色
              ),
              child: Text(
                'Drawer Header',
                style: TextStyle(
                  color: Colors.white,
                  fontSize: 24,
                ),
              ),
            ),
            ListTile(
              title: Text('Item 1'),
              onTap: () {
                // 点击抽屉项的操作
              },
            ),
            ListTile(
              title: Text('Item 2'),
              onTap: () {
                // 点击抽屉项的操作
              },
            ),
          ],
        ),
      ),
      body: Center(
        child: Text('Hello, World!'),
      ),
    );
  }
}