My favorite puzzle mechanic of the jam so far! I think the idea behind the game is amazing and it has the potential to be polished into a pretty good game. My only complaint is that it is very difficult to tell which color is going to show up where when you turn, at least I took way too long to understand it a little bit and I still think I don't fully grasp it. Perhaps more levels to ease in that mechanic or some more UI element could help? I also didn't knew about bringing stuff from one world to the next, I had to read it on the tips of the page. Not a deal breaker by any means, it's just not ideal.
Either way, great job. The game is pretty engaging as is, a pretty cool mechanic and nice challenging levels to use them.