Board Thread:Speculation House/@comment-2.121.244.99-20160919002524/@comment-5430952-20160919050457

Hrm, that reminds me of the internet theory (can't exactly remember where) that all people with red eyes are descended from Salem, which I really don't believe. Qrow is adamantly against her, Yang has been fighting her minions without realizing it, and Raven is unknown. And Emerald's eyes have nothing to do with her disposition, it's her crappy upbringing (or possibly her lack of one) that made her so jaded.

As for Yang, to me her eyes turning red is a sign of her Branwen blood flaring up, nothing truly malefic or anything. Though I wonder if she got her temper from Raven, Tai definitely doesn't seem like a hothead, either that or he's tempered his emotions so they don't rule him like they do Yang. Something like this anyway.