Yes! for Chocobo only mounts but with different looks, other then just colours.
Example:
-Longer feathers on both sides of the head, similar to FF13,
-Longer necks, short necks etc
-Long tail feather, short, split etc
-Different beak size, long, sharp, big, short etc
-Different comb size, spiky, bald etc
-Longer legs, or thick legs - sprint types, jump types etc

along with colours, so many possibilties!!!!!! Lets stick with Chocobos please!!!!