If you mean the regular antlers, they change color based on what pelt you are wearing. We don't get to choose unfortunately. But you can also get someone to cast antler spells on you by rubbing up on certain trees that drop pinecones, and then you can get some of the different antlers available.

Take a look at this - Pelt Selector

You'll see what i mean about the antler color

Then here - Antler Selector

Those are the other antlers you can get.

Hope that helps.