After more time than I'd have liked, I finally got my black Tru-Spec dyed to GB2 charcoal. I can't say for sure how well it matches since I haven't been able to compare it to anyone's in person, but it looks pretty damn close to the screenshots I had been referring to while I was dying the suit.
We finally discovered the bug affecting logins to the forum. We are working on finalizing the fixes now.