In Cataclysm (and perhaps even as far back as WotLK? I can't rightly remember, to be honest) we have seen NPC spellcasters using blue and purple versions of Mage fire spells.
Do you think that Blizzard will ever get around to adding a question/option for mages to use green or purple fire in the future? Would you even want to make use of this feature?
(((Also, if anyone can recall the name of this special type of fire, I would appreciate being told. The green fire that warlocks use is called felflame, correct? Wasn't the purple/blue fire that the Twilight Cultists used in Cataclysm called twilight fire?)))