User blog comment:BenRG/The Chosen One/@comment-11188061-20130825155715/@comment-24113789-20131212233623

I tend to think that silver eyes are an indication of special abilities of some sort: either superior strength, or superb endurance, or massive Aura; or all three. I mean, in the Red Trailer, she fended off a large pack of Beowolves all by herself without taking any damage whatsoever; meanwhile Weiss could not even fight one Knight without taking an injury. We have not seen Ruby use Aura distinctly, but if you look closely Ruby (and really all of the characters except Jaune) glow somewhat during and after battle sequences; it is possible the Ruby's Aura is so powerful that she uses it without even trying or appearing to use it.