No. The fact is, magick is a tool. it is the car, and we are the drivers. What we do with this magick is what would be considered black or white. Really, it depends on the intention of the caster, and that is the thing that is black and white, not the magick, because it is just the tool to portray desire. You don't blame the gun, you blame the person who pulls the trigger ;D
Magic is magic, imagine a knife, it can be used to cut food, to cut leaves and branches OR it can be used to hurt and to KILL. The knife doesn't know what's its' doing BUT the wielder of the knife DOES. Of course if someone is 'powerful' then their magic will be in accord with there power level. One can have a lot of power whether they are good or bad.