Quote Originally Posted by Senn View Post
Like others have mentioned, you can currently change limbal ring color, so not sure why you can't change the eye color either.
It's because the limbal rings are controlled by the same template setting that tracks the race-specific tattoos in other races, or ear clasps for Wildwood Elezen: two on/off switches and a colour palette.

I think that's also ultimately the logic why races with optional scars can turn them on and off – they're controlled by the same switches that in some other races affect less permanent things like makeup or earrings or beards, and the devs have erred on the side of letting some races change slightly nonsensical things over blocking off logical options for others.