Introduction -- Color and structure : current views -- Color spaces and color order systems : a primer / Rolf G. Kuehni -- On the reality (and diversity) of objective colors : how color-qualia space is a map of reflectance-profile space / Paul M. Churchland -- Color experience : a semantic theory / Mohan Matthen -- More than three dimensions : what continuity considerations can tell us about perceived color / Reinhard Neiderée -- Color within an internalist framework : the role of "color" in the structure of the perceptual system / Rainer Mausfeld -- Color spaces and explanatory spaces -- Into the neural maze / Donald I.A. MacLeod -- Where in the world color survey is the support for color categorization based on the Hering primaries? / Kimberly A. Jameson -- Color, qualia, and attention : a nonstandard interpretation / Austen Clark -- It's not easy being green : Hardin and color relationalism / Jonathan Cohen -- How can the logic of color concepts apply to afterimage colors? / Jonathan Westphal -- Color blindness -- How do things look to the color-blind? / Alex Byrne and David R. Hilbert -- What do the color-blind see? / Justin Broackes