You might like to look at how reapp [1] has achieved this. It has default styles baked into each component, allows granular overriding of styles at a component

You might like to look at how reapp [1] has achieved this. It has default styles baked into each component, allows granular overriding of styles at a component level, as well as global theme support. [1] http://reapp.io http://reapp.io / https://github.com/reapp/reapp-ui https://github.com/reapp/reapp-ui