Mixbox: Practical Pigment Mixing for Digital Painting

Mixbox is a pigment mixing black-box. You pass RGB colors in and get the mixed RGB out. Internally, Mixbox treats the colors as if they were made of actual real-world pigments. It uses the Kubelka & Munk theory to predict the color of the resulting mixture. This way, Mixbox achieves that blue and yellow mix to green, the same way real pigments do.