The goal of Bob Ross, one of America's most beloved artists, was to open the world of art to people who otherwise would never be able to enjoy the fun and excitement of painting. Bob Ross has been on over 250 channels and lectured throughout the world on his Joy of Painting method. His products have been developed to successfully achieve results with his wet-on-wet technique, which is a basic process of painting over layers of wet paint to achieve relatively fast and effective results. His products have been produced to professional quality to insure reliable and consistent results. Bob Ross Oil Colors are a special firm oil paint which is a bit thicker than conventional artists' colors due to the needs of the Bob's famous wet-on-wet technique. Highlight colors such as yellow are a bit thinner to facilitate easier mixing and application.