Perspectives on colour space / Jan J. Koenderink and Andrea J. Van Doorn -- Light adaptation, contrast adaptation, and human colour vision / Michael A. Webster -- Contrast colours / Michael A. Webster -- Colour and the processing of chromatic information / Michael D'Zmura -- The pleistochrome: optimal opponent codes for natural colours / Donald I.A. MacLeod and T. Von der Twer -- Objectivity and subjectivity revisited: colour as a psychobiological property / Gary Hatfield -- A computational analysis of colour constancy / Donald I.A. MacLeod and Jurgen Golz -- Backgrounds and illuminants: the yin and yang of colour constancy / Richard O. Brown -- Surface colour perception and environmental constraints / Laurence T. Maloney -- Colour constancy: developing empirical tests of computational models / David H. Brainard, James M. Kraft, and Philippe Longere -- The illuminant estimation hypothesis and surface colour perception / Laurence T. Maloney and Joong Nam Yang -- The interaction of colour and motion / Donald D. Hoffman -- "Colour" as part of hte format of different perceptual primitives: the dual coding of colour / Rainer Mausfeld -- The importance of errors in perception / Alan Gilchrist -- Avoiding errors about error / Robert Schwartz -- The place of colour in nature / Brian P. McLaughlin.