FWIW, this is not just a new theme, it's a whole new forum setup. We're off vbulletin and on Xenforo now.
This is the theme we'll use at least until I get the kinks worked out. I'm not sure yet if I'll add a dark theme or not because it really is a pain to maintain 2 themes.
Just roll with it for now and keep saying "it's grey, not white" to yourself and eventually you'll believe it.