Contributed by Bonnie Morano / Years ago, when I first learned about the “pink tax” – the price mark-up on razors, deodorant, shampoo and other products marketed to women – I was outraged. A recent trip to the art supply store had me cursing the $96 price tag for Cad Yellow Deep (it is like a tube of sunshine, though) I wondered whether I was being charged an art tax. Oil paint, of course, is unique, but what about other art necessities? Do art supply stores charge more for materials that can be found elsewhere at lower prices? If so, would it be feasible to curb such price discrimination? After all, California just passed a law banning the pink tax.