Nope, I think it's just you. Sonic looks awesome in colors. He looks better than any model ever(of the new era).
Well, I noticed other users looking at it and having the same reaction.
I'm not saying the model looks bad, its one of the best looking Sonic models. Its just the spines look a bit awkward. At times, the coloring of the spines bled together and looked bad. (Asteroid Coaster boss is a good example of this) When he is normally walking or normal, I really didn't have an awkward stance at that.
I looked at HD Unleashed, the game also has the same spines. Although, it looked perfectly normal. (Higher polygons, colors, and HD?)
You're going to kill me for bringing this game up
http://www.youtube.com/watch?v=u-kNAKyq7k0I liked this model better. It animated much better and spines just felt more natural. (I especially liked the CGI cutscenes. It had much more mouth movement and joyful attitude to it)
Sonic's spines in SATBK moved freely. They flabbered around with the wind. The shading and coloring looked beautiful. The spines were spread apart and were very easy to notice the dark/light part of the spines.
I also didn't like SU Wii running spines either.