Heterochromia on Roshar

[Shadeshadow227]

If lighteyes and darkeyes are typically separate classes of people within the world of Roshar, with the ranks of nahn and the benefits to each rank inherently being inferior to the lighteyes' dahn, where do people with heterochromia fit? Say, if someone has a light blue eye and a dark brown eye, would they be considered a darkeyes or lighteyes, or would they occupy their own sort of position?

[Okdes]

At one point in Words of Raidence such a person is encountered. 

http://stormlightarchive.wikia.com/wiki/Redin

 

Edited September 27, 2018 by Okdes