I can change the colors, too -- just give me a few colors and I'll work them in.
I think the logo itself is OK, except the yellow/purple is very high on my list of most horrid color combinations.
Also, one question: what size is your original image in? To be able to use it as a somewhat versatile logo, it ought to be at least 1024x768 or so, so people have the ability to scale it down to whatever size they actually need. (Depending on the resolution of a game, that 200-pixel version above will be near invisible in some situations)