While I like his hair more than previous Quinlan's I've seen, it just looks too rastafarian. However, I have no alternate suggestion, since soft goods hair on an action figure either looks fabio-esque, rastafarian, or like they took a ride on a motorcycle with wet hair.
I know he has an olive complexion in the comics -- maybe it's the lighting or camera -- but he looks kind of greenish here.
His arms, legs, and torso look perfect, in my opinion. Nothing out of proportion, and a great mix of parts to achieve the necessary look.
All in all, probably my favorite Quinlan custom to date, good job.