Board Thread:General Discussion/@comment-4962906-20151111090025/@comment-26395584-20160307204538

The reality is this: she gained powerful magick from the grail and then committed an act of darkness, which allowed some darkness into her actual being and in turn that darkness mingled with her magick and turning green was the visibl manifestation of that mingling. It's not all that hard to figure out, really.

Also, darkness is a difference, not a curse. It's a valid state of being, though a state of being that those of the light shun with an absolute xenophobic vigor.