So fair warning, this model does not support choosing the limbal color very well. I was unable to find many images where the eye color and limbal didn't match so generally limbal color will follow eye color.
Notes:
The dataset is mostly au ra so it defaults to adding those features.
You can probably do in-painting on the eyes only to minimize au'raification.
Might need to play with the weight a bit sometimes.
Features:
muted or glowing limbals(muted_limbal, glowing_limbal)
eye color should not be affected
Eye pupil shape should not be affected