I was slightly shocked initially (I even cleared my cache thinking that something had become corrupted and showed the background as black).
It's OK I guess, I didn't really have a problem with the old one though. The missing "main" and "chat" links are a loss to easy navigation.
Also, in my opinion, I don't really like the vibe of the solid black bar. I feel like I'm on some silly blog site (or in one of Google's zillion different themes on their sites). The old bar felt cozier and integrated.