My female Nord's head became as pale as the moon when she was turned into a vampire, but from the neck down she retained her normal color. I thought it was a bug, but vampire npcs look the same when you loot their clothes so I assumed it's just a vampire thing. But then, I took a look at my female Dunmer and her body's also got two different skin tones together. She didn't look that way before. I don't know if this is a bug that came from the DLC or what, but I hope it can be fixed.