Untitled (Red) Mark ROTHKO Yellow Tony TUCKSON Painting, 202 x 143, 6 November 1967 Pierre SOULAGES Untitled Ibrahim EL-SALAHI Pilot Dick WATKINS Composition Stacha HALPERN Beyond the outsider Robert JACKS Brazil series no. 7 David ASPDEN Turquoise, olive and magenta verticals Bridget RILEY Etude Friedrich VORDEMBERGE-GILDEWART Painting 1976 Peter BOOTH Nineteen greys Bridget RILEY Untitled (Yellow) Richard ANUSZIEWICZ Project for a wall painting, colour group E (Random) John NIXON Outlier Christian CAPURRO Manifestations Mike BROWN Exultate, jubilate III Kenneth ROWELL Vertical collage Joe TILSON Marge Joan MITCHELL Untitled Robert HUNTER Self Portrait (non-objective composition) (yellow cross) John NIXON Untitled Charles BUSH Come dance with me John FORRESTER Opening Bridget RILEY Over blue Gunter CHRISTMANN Untitled (The black window) Robert JACKS Halo John VICKERY You're old enough to know better Mike BROWN Tasman Sydney BALL Signe 13 Victor VASARELY