They've definitely opened the gates on a single color of each model (which I believe are going to be their post-launch production colors), but it sounds like some others offered during campaigns are still behind. I suspect the black model looks better. Talked briefly with Gavin at Bay Area headphone meet this weekend and he seemed nice also.
Outs aren't the giant killers some have rumored and aren't nearly as multi-impedance friendly as I hoped, but sound pretty damn good for the price with the right phones (which from the specs aren't necessary which you'd except). Curious what you think with your HD600/650s.