Art spectrum® studio oil is a secondary range called art prism. Art prism is a one series range of 26 oil colours. All colours are made to the same exacting standards and methods as our professional art spectrum® finest artists’ oil colours. This studio oil range has a buttery consistency and provides a balanced palette capable of producing almost unlimited clean colour mixes. All colours are lightfast and on toxic and can be used together with art spectrum® finest artists’ oil colours, mediums and varnishes.