[sallar]

I tried using these components in Buttercup (our open source password vault https://github.com/buttercup-pw/buttercup), but immediately regretted it. It's impossible to theme, the less/css files are dirty and not extensible, defaults mess with your current style, etc. At first look, it looks promising and great but not when you actually try to use it.

[yadongwen]

Antd is an official implementation of the ant design language. If you read their introduction (https://ant.design/docs/spec/introduce) you'll see they target "middleware" products (or 中台应用, which actually should be translated to internal applications) which don't require customized UI and theming.

[benjy_c]

Try https://ant.design/docs/react/customize-theme