You can't change your eye color through Magick, but some eyes have more than one color, so can look different in different lights, against different back drops, etc. My eyes are hazel, so they can look blue, gray, or green.
Examples of spirits who use glamor Magick are the Fae/Little Folk of the Celts and the Alfar (specifically Alfar and Svartalfar) of the Norse, as well as plenty others. Glamor wasn't ever physically changing anything; it is illusion.
most people are correct on this at my school they teach magic but we call the both halfs light and dark i now i havent picked any term yet and i shore know that they cant teach u how to change youre i color ok