You might like Left Right Scarlet, Emerald, and Orange : July-September 1976 Patrick Heron 1976 Overcast Trevor Bell 1961 Everglades Edna Ginesi 1964 Cambridge Green Mark Lancaster 1968 17. 3. 69 John Hoyland 1969 Three over Four Robert Medley 1970 No. 5/73 Jeremy Moon 1973 Cantus Firmus Bridget Riley 1972–3 Four Shifts I John Loker 1977–8 Cadmium with Violet, Scarlet, Emerald, Lemon and Venetian : 1969 Patrick Heron 1969 Isphahan Robert Medley 1974 Calshot Trevor Bell 1970