The rich buttery texture combined with a wide range of vibrant colors make these paints a favorite among instructors and professionals. Each color is comprised of pure pigments and refined linseed oil tested several times throughout the manufacturing process. The result is consistently smooth brilliant color with excellent performance and permanence. 37ml tubes are available in 90 colors sold as a box of three. 150ml tubes are available in five colors sold individually. Transparency rating - T=transparent ST=semitransparent O-opaque SO=semi-opaque.