There is not really a mixing system. I use tw graphics 5500 series and add pigments with matsui, rutland, tw, and nazadar. I have a pantone book and match to that based on color theory. You can use a color pigment system to give you a idea of what pigments you need to use but the bases are all different so you have to wing how of each pigment you need. The best reference is a pantone book and a dry swatch of ink on the paper your printing on to determine color matching and to write down your recipe. Good luck!