There is some question as to whether a cat's coat color is a good predictor of his personality. Any cat owner will tell you this is true, and the web has several lists of personality types.
The book The Domestic Cat: The Biology of its Behaviour, 2nd edition by Dennis C. Turner, lists three possible mechanisms for a causal relationship between cat coat color and personality type.
- Coloring can affect the animal's perceptions, putting him at a physical disadvantage that affects his behavior.
- The chemicals involved in pigmentation are related to, or metabolized to form, neurotransmitters that affect mood.
- The genetic code for personality is on the same chromosome as the genetic code for coat color.
Turner, Dennis C. The Domestic Cat: The Biology of its Behaviour, 2nd edition. Cambridge University Press. 2000. pg 54.
Ellis, Leslie A. Cat Personality & Coat Color, Into the Void, April 8th, 2010.