I believe simple rounded box view and even badge widget should be a part of some generic Xamarin.Forms extension kit. I'm not familiar with writing plugins workflow though. So I decided to share some widgets as simple snippets at this time. Hope it may help someone Image may be NSFW.
Clik here to view.
Here they are:
https://gist.github.com/rudyryk/8cbe067a1363b45351f6
There's no custom renderer for Android right now, I think I'll implement it soon, it should not be a problem Image may be NSFW.
Clik here to view.
Screenshot (the rounded red one below):
