Oh well, maybe this makes sense, it didn't even cross my mind before. But I used to think that the colors of the glow somehow depend on the nature of Maidens. I mean, it was yellow-orange with Amber too, and she had brown eyes.



But I just had another thought. Maybe it has something to do with the color of the Aura? Cinder's and Amber's Aura colors are both orange and Raven's is red. This way Emerald's glow could also be green... Interesting.