I use that but I still mix my own color. I use the flesh and add a touch of brown and orange. I add color to the flesh bottle which then make the color more consistent. If you need spot on accuracy through a run and can cast most of the parts right away, mix the color into all of your B resin first. Then all parts will come out pretty close to even. But don't wait too long to use it. Needs to be quick turn around.