Assosiation or Projection

"I has been misunderstood by writers, who have imagined that the peculiar individuals having this trait actually see the color on the letter, which is not the fact. It is a mental association, not a false vision." (Cytowic and Eagleman)

I have an issue with this quote, while I certainly agree with it, it disregards the possibility of projector synesthetes. While associators perceive colours or other stimuli in their "mind'd eye", projectors physically see graphemes transform colour. For instance, a "2" printed in black on white paper will appear to them as green. They have full knowledge that the 2 is printed in green, but they see green externally.

Cytowic, Richard E, and David Eagleman. Wednesday Is Indigo Blue. Cambridge, Mass.: MIT Press, 2009. Print.