I don't really like how the werebear looks. It doesn't look that different from the regular bear. The werewolf looks like a giant, muscular, humanoid bipedal version of the regular wolf. The werebear looks like a bear on two legs.
Maybe the color of the muzzle could be a customization option in addition to the coat, sort of like this mod: http://www.skyrimnexus.com/downloads/file.php?id=1205