A pretty engaging use of the implementation! Not too easy and not too hard either. I think that there doesn't need to be extra lives when you collect colors, it feels like it could be even more engaging without that. Also, in order to alleviate the pressure of accidentally colliding with your past self right at the moment you collect a color, maybe there could be an additional 1 second delay before your past self becomes active in order to give the player a chance to get farther away. Awesome work overall!