I was thinking there would be more purple, but it isn't to bad. It feels a little clustered to the top left on most of the pages. You might want to consider making use of the open space like on http://www.purplenova.net/community.asp. It would be a good idea to line up each page so it gives it a seamless feel on page navigation.
However, the comment about "nova", I tend to agree with. A lot of folks use this as part of a product name or company name. The worst example of it's use was the Chevy Nova, because in Spanish No va means "not going", or "doesn't move". Thus quite literally they named the vehicle "Chevy Doesn't Move" lol