If the bubbles don't work in any other colour, then I like this better. It is a great shame though as I liked the idea of the bubbles a lot.
I like the tweaked "new posts" thingamy on the front page, still subtle but more obvious with the reversed bubbles as well as darker quotes.
All in all, really good work Nexus.
edit: I don't know if this is the theme, the new software or what, but every post which has been edited is now coming up with scroll bars on my work machine (haven't tried it from home yet). I'm not actually losing any of the post off the screen, it's just creating really short scroll bars for no particularly apparent reason. No big deal really, just pointing it out.