I think I'm trying too hard. I can't find my Book of the Cat for my LIFE!
I wonder if I loaned it to someone?
Anyhow, from what I recall in the genetics portion, it discusss the different genome markers for specific attributes, like color, pattern, hair density, length and straight/curly... There are A LOT of variations. In the color part, there is a wide range with names like brown, lilac, chocolate, blue and ginger. In fur length we have from Rex super-short/curly to Persian super-long/fluffy and every combination in between.
The colors and patterns are what I found interesting... I believe it said ALL cats have tabby markings. Even in self-colored (solid black, gray or white
) you can still see them...not in obvious different colors like a proper tabby, but in the different hair lengths at the "M" on their foreheads. (take a look...you should be able to tell that the black "M" has shorter hair than the mixed color agouti hair around it
.) Agouti is what makes the patterns (classic, mackerel, spotted, abssynian
) stand out from the solid color of the cat. Agouti is the banding of colors on the hair shaft, and this is usually a mixture of yellow/tan/brown and black bands.
Also, like your Milly, some cats have the pigmentation of the hair shaft that begin a ways UP the shaft, not beginning right at the skin. Some do, some don't. It all comes down to genetics.
I wish I could find my book!