Hi Chris,
I've heard of people associating letters and numbers with color. I may be thinking of an NPR article I heard on this once. A brief search of the web found the term synesthesia . You might try this link and see if it helps:
http://en.wikipedia.org/wiki/SynesthesiaGrapheme → color synesthesia
Main article: Grapheme-color synesthesia
How someone with synesthesia might perceive certain letters and numbers.
Another example of real synaesthesia for letters and numbers.
In one of the most common forms of synesthesia, grapheme → color synesthesia, individual letters of the alphabet and numbers (collectively referred to as graphemes), are "shaded" or "tinged" with a color. While synesthetes do not, in general, report the same colors for all letters and numbers, studies of large numbers of synesthetes find that there are some commonalities across letters (e.g., A is likely to be red).[3][5]
A grapheme → color synesthete reports, "I often associate letters and numbers with colors. Every digit and every letter has a color associated with it in my head. Sometimes, when letters are written boldly on a piece of paper, they will briefly appear to be that color if I'm not focusing on it. Some examples: 'S' is red, 'H' is orange, 'C' is yellow, 'J' is yellow-green, 'G' is green, 'E' is blue, 'X' is purple, 'I' is pale yellow, '2' is tan, '1' is white. If I write SHCJGEX it registers as a rainbow when I read over it, as does ABCPDEF."[13]
