I have had hairless with black eyes
he was a naked black maybe chocolate berk... hard to tell 'cause his hair fell out... hahaha
going to go check the eyes of the two I have... I believe they both have black eyes... they are hooded nakeds <edited to add, yup.. they both have black eyes>
I also had a very light colored pink eyed baby & two that had very dark red eyes as well.
Alopecia, the condition that causes hairlessness, is just that. A genetic condition that results in hair loss. The rats still carry all the same genetic markers for color & markings... just no hair or not a great deal of it.