Best Android Resources for Designers (?)

I'm a product designer wanting to contribute to Android. We've had a really difficult time within my team on the Android-front (in both finding good Android developers, but then also the devs we have worked with have no concept of being able to reproduce what the design looks like).

I conceptually know nothing about Android so this probably sounds stupid, but my intention would be to build the "front-end" of the apps (colors, fonts, spacing etc) & work with our lead Android developer who would hook up the backend.

Are there any resources for this kind of thing? Or do I have to get my hands dirty & dive into the whole Android ecosystem?