I hope they name the spells Chaos versions instead of Fel versions, like the Valk'yr-made clones in ICC (who cast Rain of Chaos).
I guess half the existing green fire spells are Chaos (Chaos Bolt) or Fel (Felflame), tho ... meh, guess it doesn't matter; just, I've wanted the green chaos spells since we first got to the upper spire in ICC>