像这样使用——>

CircularProgressIndicator (valueColor: AlwaysStoppedAnimation (Colors.grey [500]),)),

主题是可以插入到小部件树中的任何位置的小部件。 它用自定义值覆盖当前主题 试试这个:

new Theme(
      data: Theme.of(context).copyWith(accentColor: Colors.yellow),
      child: new CircularProgressIndicator(),
    );

参考:https://gitter.im/flutter/flutter?at=5a84cf9218f388e626a51c2d

像这样使用——>

CircularProgressIndicator (valueColor: AlwaysStoppedAnimation (Colors.grey [500]),)),

如果你想全局更改，在最新版本的flutter中，你应该更改colorScheme:

void main() => runApp(
  MaterialApp(
    title: 'App',
    home: Home(),
    theme: ThemeData(
            colorScheme: ColorScheme(
                primary: Colors.red,
                // You should set other properties too
            )
        ),
  ),
);

这招对我很管用:

CircularProgressIndicator(valueColor: AlwaysStoppedAnimation<Color>(Colors.white))

对于单色集合，

 CircularProgressIndicator(
     valueColor:AlwaysStoppedAnimation<Color>(Colors.red),
   );

适用于多种颜色变换/设置。

class MyApp extends StatefulWidget {
      @override
      _MyHomePageState createState() => _MyHomePageState();
    }
    
    class _MyHomePageState extends State<MyApp> with TickerProviderStateMixin {
      AnimationController animationController;
      @override
      void dispose() {
        // TODO: implement dispose
        super.dispose();
        animationController.dispose();
      }
      @override
      void initState() {
        super.initState();
        animationController =
            AnimationController(duration: new Duration(seconds: 2), vsync: this);
        animationController.repeat();
      }
    
      @override
      Widget build(BuildContext context) {
        return Scaffold(
          appBar: AppBar(
            title: Text("Color Change CircularProgressIndicator"),
          ),
          body:  Center(
            child: CircularProgressIndicator(
              valueColor: animationController
                  .drive(ColorTween(begin: Colors.blueAccent, end: Colors.red)),
            ),
          ),
        );
      }
    }