Yeah, I can only really echo dbuck on the collar. I think that is the only think they would require be fixed, but other than that, the color of the straps is a minor issue that will most likely not get your buyer rejected.
Of course, they would eventually want to upgrade the belt to have mini-flares, and the chestbox strap should be green, but I've seen worse pilots get approved!
I agree with padme, signing up to rebellegion.com and posting all this in the rebel pilot section is the best way to get the most accurate feedback on this, but your buyer will sign up anyway to get approved, so just point them in that direction, and all will be wonderful.