Term originally used to describe the work from about 1950 of the Abstract Expressionist painters Mark Rothko, Barnett Newman and Clyfford Still, which was characterised by large areas of a more or less flat single colour. 'The Colour Field Painters' was the title of the chapter dealing with these artists in the American scholar Irvine Sandler's ground-breaking history, Abstract Expressionism, published in 1970. Around 1960 a more purely abstract form of Colour Field painting emerged in the work of Helen Frankenthaler, Morris Louis, Kenneth Noland and others. It differed from Abstract Expressionism in that these artists eliminated both the emotional, mythic or religious content of the earlier movement, and the highly personal and painterly or gestural application associated with it. In 1964 an exhibition of thirty-one artists associated with this development was organised by the critic Clement Greenberg at the Los Angeles County Museum of Art. He titled it Post-Painterly Abstraction, a term often also used to describe the work of the 1960 generation and their successors. In Britain there was a major development of Colour Field painting in the 1960s in the work of Robyn Denny, John Hoyland, Richard Smith and others.