The skin color restrictions that have been imposed are a little difficult. It would be one thing if we at least had the ability to cycle through a "next acceptable skin color" option, but I find myself standing in front of the prismatic mirror, typing in a number and getting "invalid selection" over and over.
Are the acceptable skin colors even listed anywhere?
As for feedback on colors that should be allowed:
126 and 127 are perfect lore appropriate skin tones for a drow, but they're blocked.
12, 168 and 158 are totally reasonable Caucasian skin tones for a human but they're blocked.
16 is a little more out there, but I think it's a flavorful skin tone for a vitamin D deprived basement dweller and I'd say reasonable for the underdark. It was blocked for humans.