Hi Evan,
Thank you for the suggestion.
Yeah I’d love to support third-party themes on mobile and I’m aware of the fact that quite many people want it:
As I answered above, it’s hard to support customizing the UI theme as it’s built with React Native, which doesn’t support CSS-based styling. It needs to rebuild the entire UI components with theming ability in mind.
So, it will take time. I’ll discuss it when the current roadmap has been finished.