User blog comment:MigsDaRutt/Neo theory/@comment-4023909-20160424043428

me and my sister have partial Heterochromia. our eyes can change from a light brown to a dark green, and the "outline" and the inner part can be two different colours (mostly brown on the outer and a lighter brown/green on the inner). I cant control it like neo (but who can in real life...mine change mostly on the weather and a little of my mood) and I'm 100% sure none of my family members bone there brother or sister...

neo is prob.. well.. neo. like all the people in the RWBYverse she's different and her mirror/ clothing changing power may be linked into her eye (hell, she may be changing her eyes for the hell of it and may have "normal eyes"), a bit like when yangs turn red when she gets pissed.

so no, I don't think neo was "made" from incest...