I think it's nice for the most part,
What fps are you using? I'm also getting what looks like lag on the mouse trail effect, but can't tell if it's just low fps or not. It'd be nice if everything altogether ran a little quicker and smoother.
I guess the dimensions of the swf are final? If so, personally I'd like to see everything shrunk down a fair bit, I'm not a fan of big giant buttons. On top of scaling everything down as a whole, I'd also reconsider the proportions.. I find the buttons are dwarfing the text in the center.
Other than that, color is nice, layout is pretty good.. overall I like it.