User blog comment:IamJakuhoRaikoben/Chapter 456: Order, Review./@comment-67.5.245.122-20151011202022/@comment-76.3.76.211-20151011213559

Erza's not a blonde and Lucy's magic is comparison to heaven and angelic and she is like light (considering that's what her name means), and Natsu's to hell and demonic also being a demon and all, darkness.