 Within wide representationalism or within narrow, there may be disagreement about what kinds of properties are represented. In the previous section, it was assumed that the putative representata are environmental features such as the colors of physical objects. But others have been suggested (Byrne (2001), Levine (2003)): e.g., perceptual experience might instead represent sense-data, or nonexistent colorish properties that physical objects do not really have. Shoemaker (1994) defends the view that a color experience represents a dispositional property, viz., the disposition to cause an experience of just that type. (Kriegel (2002b) and Levine (2003) defend versions of Shoemaker’s view in order to keep sensory qualities narrow and to handle various inversion cases.) On one interpretation at least, Thau (2002) posits a special sort of quasi-color property, distinct from but related to actual colors.