Although I've seen the basic premise of moving two characters at once and trying to get them together, I thought you introduced very interesting mechanics with the colours and abilities! It was a pity there weren't more levels, because I see loads of potential in it! The one issue I found was that it wasn't always clear to me which was the "main" character and how the others would move (they don't always mirror, I think). Some other visual cue so that this is obvious from the start would be great (for the levels you set up this wasn't crucial with your first movement, so it wasn't a problem, but it might be in more complex levels).
I also really liked the art! It looked simple but conveyed loads of information with a quick glance. Awesome job!