Just a few things to add:
The bronzed skin may look worse in the publicity photo because the photo is unnaturally dark. In the wan light of the Pacific Northwest, it may look washed out and almost natural.
Being impervious to the weather is a corollary of being a savage, of course. Half-naked Indians rarely if ever shiver from the cold.
Let's recall that in the books, Jacob is 6'7" and the other werewolves are almost as tall. In other words, they're that much closer to being man-monsters. By making them normal height, the movies have downplayed the books' stereotypes.
For more on Twilight's depiction of rez life, see Stephenie Meyer's Use of Quileute Characters.
For more on that subject, see How Animators Tackled Werewolf Transformations in New Moon.
On the bad side: Jacob is "not helped any by the cheap wig he wears for half the movie," according to the McClatchy Newspapers' review. It's as if it took the filmmakers that long to realize how phony the hair looked.
The Wolf Pack's primary scene shows them fighting among themselves. Paul (Alex Meraz) gets angry and turns into a wolf to attack Bella, and Jacob (Taylor Lautner) does the same to defend her. In other words, Indians are like beasts who can barely control themselves. They're far from the great tribal leaders who fought their battles with words and ideas, not arrows or claws.
On the good side: Jacob speaks a few words of genuine Quileute, according to 10 Things You Need to Know About Taylor Lautner:
For more on the subject, see Capsule Reviews of New Moon and Media Doesn't Know Quileutes Are Real. For more on Twilight in general, see Quileute Werewolves in Twilight.
Below: "I'm a civilized Indian with a long history of religion, culture, and art. No, really!"