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 B/3L/73 Marc Vaux 1973 Zany Balances Bernard Cohen 1973–4 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 Calshot Trevor Bell 1970