Winsor & Newton''s Winton Oils An extremely popular line of student grade oil colors from one of the best known manufacturer in the art industry. 49 carefully selected colors containing traditional pigments like genuine cadmiums as well as some of the less expensive modern alternatives. For instance W&N substitutes Azo pigments to make Cadmium Red Hues and Cadmium Yellow Hues to keep these colours within an economical price level for serious students.