Quick material test using masks on one of the Neko faces to create variable eye colours. It's not quite right yet, since it's locked to a simple hue shift, eventually I'd like to make this another variable in the DNA system which uses the same colour tinting system as the body trim, hair, etc.
But first in order to do this I need to suck all the colour out of all the eyes in all the faces and connect masks and new variables, so this one might take some time.