Because we fill every tube by hand, the paint can be as thick, and the color can be as rich as it needs to be, in order to be good. Our Ivory Black is the perfect example, since the genuine Bone Black pigment is so beautifully subtle yet impossibly textured for automated tube filling machinery. Every painter deserves the ability to make those delicate warm grays that Ivory Black is suppose to make! How about yours; is it just any black or is it Vasari Classic Artists' Oil Colors?