I hate the blue. I think the UI is facebook 2.0 completely, and while I think they are well done - I think they look like a cold corporate site profile and is one of the things that I have always hated about facebook - the UI is really not that good. Sure its functional - but you cant argue that its something revolutionary.
Luckily, Appleseed is very flexible, so it's not only possible to change the colors, but to radically rearrange the layout while maintaining the functionality.
I expect many sites running Appleseed will hire designers to "brand" their site in a way that appeals to their users.
but you cant argue that its something revolutionary.
I wouldn't, actually. I think social software works best when it's pragmatic and conservative. The revolution is under the hood with distributed social networking.
BTW - I dont mean to take away from Appleseed or what you're doing - but I just have a gut reaction against all things facebook. I have never had an account and never will and I have a very dystopian view of what that service really is.