fantastic concept, I really like it.
I agree with a few others that it's a bit slow to get going - perhaps speed up the rate at which you gain levels and cut down on level length.
also, there's a bit of a quantum leap in difficulty at level 6 - it seems as though you keep getting situations designed for a blue blast, but blue reloads too slow to be used. oh, and it's a little annoying when you can't see the coloured pods around you while using blue.
but, still, great game, especially for your first flash game :)