So I eventually managed to become a Black mage. I am kind of disappointed, actually. After all that work I fail to see much difference. Apart from the fact that the Conjurer cross-class abilities are gone and thus so it is "Protect".

I mean I just gave it a fast check in-game and played a couple of missions, but as far as I've seen there isn't much.

BTW where can I find the black colour for dyeing?? ^_^