How are skin colors calculated?

Is there a set range of skin colors? There doesn’t seem to be, since the palette is different with different avatars. Or are there sets of skin color palettes?

Thanks.

Oh, inspecting the page and looking at the request, I see this call being made:

https://api.readyplayer.me/v2/avatars/667428145b9b62b38a14226b/colors?type=skin

The v2 avatars endpoint hasn’t been documented yet.