Does anyone have an MX recipe for getting a good neutral gray on cellulose using only primaries from Pro Chemical? I just need the proportions of red:blue:yellow. I have all the ProChem pure colors. I know they now have a Procion Gray but I want to mix mine from scratch. Thanks.
Generally, the kind of mix you are looking at makes icky brown, not gray. I would just buy gray.
Actually I found the right proportions and got a beautiful gray.