Being a man, I can say that I did not close the browser because of the colors.
I think the absence of banners and the very light color scheme, is a good thing. If you add some more content, and keep things clean as they are, I think you can do well. The site opens any internal link almost instantaneously on my connection.
I think it is very good work, and you should try keeping on that line, and have other gambling related websites with other development strategies.