I see a white back with a large box containing a small icon, I also got bothered by a prompt wanting me to download and install something called "Flash" which I refuse to do (having Flash installed makes my browser do things I don't want it to do as I surf the net because of all the idiotic ads which now use Flash).
This is my own personal opion, but I do not care for black backgrounds. They make the text to difficult to see. That is the case with your pages. I would also provide a non-flash version for those that do not want to go through all that. The flash is nice, but does it add something to the site other than making it look cool? You should consider that. Good luck.