What about this as a suggestion for new forms: Have it as a spell called Camouflage. Example: http://wowitemcreator.com/view/261947/Camouflage.html
This way, if we're in the snow, we use the spell and our catform turns into a snow leopard, or if we are in undead lands, we use our spell and our bear form takes in the surroundings and turns into a plagued bear. You guys get the point.
Feedback please.
You'd learn this spell @ lvl 40 or something and channel it for 10 seconds.