Well these are how the reviewers made their character. Remember you could make your characters fairly wonky colored in Oblivion. I am fairly confident that the archer on the road in the QuakeCon demo was a Bosmer as well, he had a normal Caucasian skin tone.
Yeah, hopefully the majority of NPC's stick to something lore friendly. I want to be able to tell what the different races are. I don't want pink or white Dunmer walking around in game. It would be nice if there were set limitation for each race. That way we could make them unique while staying within the confines of said race. But maybe Bethesda has made it possible for some mix matched races now?