At the behest of some suggestions I got on my crap art, I'm going to go out and buy some oil paints next weekend. It was suggested that I go get some titanium white and some ivory black. The problem is that I looked up what ivory black actually is and it turns out it's bone char. Since I'm a vegetarian, I'm opposed to buying this, so my question is is there a vegetarian alternative that is just as black as ivory black? Does it really matter which pigment I use?