The most beautiful and easily worked burnt umber color produced today. Each color is made in small batches to offer clarity depth richness and permanence. Our color is crafted from artistsâ pigments free from extenders or adulterants and dispersed in pure non-yellowing American walnut oil these paints provide color that is more naturally alive and brilliant. Using walnut oil allows us to increase the amount of pigment in each color resulting in extraordinary richness color saturation brilliance and tinting strength. Intermixable and compatible with all other oils varnish and mediums including alkyd resin products.