I did not reach the end. There are good ideas but the game's mechanics aren't crystal clear about "moving blocks" and the coloured areas. When different sorts of ennemies appears in a same level, their patterns looks complicated to prevent and the level seems too tricky with all the blocks in the middle of the area. I'm affraid i didn't get how to play your game as you expected :/
But, the principle is interesting and I really liked your graphics !
Good luck for the following !