When v3 update v4，no method to modify some component's theme.

[shiwanjun1995]

UI升级为v4版本之后，没有办法自定义某个组件的主题了，大佬别关闭这个issue。

[github-actions]

Hello @shiwanjun1995, your issue has been closed because it does not conform to our issue requirements. Please use the Issue Helper to create an issue, thank you!

你好 @shiwanjun1995，为了能够进行高效沟通，我们对 issue 有一定的格式要求，你的 issue 因为不符合要求而被自动关闭。你可以通过 issue 助手 来创建 issue 以方便我们定位错误。谢谢配合！