 Accordingly, in the case of shape and size, we can distinguish between three kinds of properties: e.g., vision-independent shape, shape’s visual potential and perspectival shape. Noë models his theory of color on the second kind of property: “colors are ways colored things change their appearances as color-critical conditions change” (Noë 2004: 141). This is an intriguing theory. What isn’t so clear is what exactly perspectival color is.