  What is this property of being red-for-Nonvert? The usual answer is something along the lines of the account of appearance properties in Shoemaker 2002: something is red-for-Nonvert iff it is disposed to cause experiences with \(R\) in perceivers of Nonvert’s kind. And this, of course, is essentially the “secondary quality” account of color that many find in Locke. Sometimes relativism is combined with representationalism (McGinn 1983, Tye 1994), but it arguably fits more naturally with phenomenism (McLaughlin 2003, Cohen 2004).