I don’t know of anything technology specific, but what I’d recommend is to make yourself a “style guide”, which can be as simple as a few mockups of screenshots with every widget that your game will need. Consistant design is more about making decisions and sticking to them, which is harder than it seems. Keep in mind “what is the user trying to accomplish” here, and minimize that friction, use appearance to provide hints and not just fancy eye candy. Try to reduce or eliminate text, even “in-your-face” instructions are often unread.