It's a personal preference. Some people look at the color of the mini and think, "Hey, that's pretty close to what I wanted him to be anyways." and then they just paint the other non-color areas (like Ninjaman65 did with the sorc). I usually give even my dipped minis a base coat and paint everything on that, habit I guess. Either way, the results are the same. So if he wanted those parts of his sorc to be red, then leave 'em red. I probably would have painted flesh tones, but that's my preference. IMHO, I think it looks great
-shnar