Does Fae magic have a black side? What would constitute black magic for Fae? For Wizards we say that mid manipulation is black (mab did to harry), Killing humans is black magic (dont have an example from the book, but I am sure it has happened).
I dont think so because a)the primary consequences of black magic are affects on ones soul, and Fae dont have them, and B) we've seen do all kinds of things that would be Black Magic (forced transformation of people into animals, mind reading, killing, compulsions, etc).
That being said, they may have other limits, relative to the Laws. For example tehy may not be able to do Necromancy, as it is a fundamentally different energy source. We know they cannot Summon Outsiders, though they can cooperate with them once the infiltration has occurred.