These are some nice concepts, but this is entirely overbaked (in my opinion).
I don't find the colors of VS2k10 "distracting" me or making it "difficult" to find things at all. I am glad, however, they're removing a bunch of those useless buttons by default (of course you can always remove them yourself, but I digress).
I can appreciate what they're attempting here, but why go this far without a road back? If you're going to completely overhaul the look and feel this much, and go so far as to let people choose between 2 different color schemes, why not at least give people the option of using the classic scheme, or allow for custom user developed schemes (which would invariably give rise to a few "classic" ones anyways). Maybe they mentioned this and I missed it... I hope thats the case.
I've always felt the U/I got better with each iteration since the original VS, but this is the first time I'm not excited to get my hands on the next version based solely on the look and feel.
Of course, I'll have to reserve final judgement for when I actually get my hands on it.