Shulker shell isn't re-textured in any official texure packs except Candy

The texture of the shulker shell does not change in any of the official texture packs except for Candy Textures.

Edit by Zeb: This may or may not affect the Fallout Mash-Up Pack & Chinese Mythology Mash-Up Pack. If someone could test this in 1.0.7.0/1.1.0.9 or later, please do so.