如何在flutter filterChip中更改复选图标颜色

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('FilterChip Demo'),
        ),
        body: Center(
          child: FilterChipDemo(),
        ),
      ),
    );
  }
}

class FilterChipDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ChipTheme(
      data: ChipTheme.of(context).copyWith(
        checkedColor: Colors.blue, // 更改选中时的颜色
        checkmarkColor: Colors.white, // 更改复选图标颜色
      ),
      child: FilterChip(
        label: Text('Flutter'),
        onSelected: (bool selected) {
          print("Selected: $selected");
        },
        selected: true,
      ),
    );
  }
}