Love the game. As a suggestion (though I might be the only one...), I think it would be cool to have some sort of "infinite mode" when you've completed all the missions. I was thinking either have all colours starting on max - so no colour fragments come, or maybe have all colours on levels 3/2/1 for tiers 1/2/3, and no colour magnets - just have random colour fragments coming. I guess this might have been suggested before...
It's a great game, just annoying with the sound. If you switch the sound off on one level, it's on again when you start the next level... it'd be good to get a fix for that...