After decades of breeding, the complexity of cat color genetics is quite well understood. Genes which control pigmentation, hair length, color dilution, banding (agouti), white fur (dominant, spotting, or albino, sometimes linked with deafness), tabby patterns, and more combine to create a wide spectrum of possibilities. Specific traits such as white gloving among Birman cats and the amber color found only in Norwegian Forest Cats (which comes from a single female born in 1981!) have also been isolated and studied, and can be affordably tested for. On top of all that, fur color is epigenetic as well as genetic, and sometimes responds to the cat's environment. If you clone a calico cat, you get a kitten which doesn't have a similar coat due to X-inactivation, and pointed cats (such as Burmese, Siamese, and Tonkinese) have temperature-sensitive coloration. [more inside]
Mere color, unspoiled by meaning, and unallied with definite form, can speak to the soul in a thousand different ways.
COLOURlovers blog - science, design, art, culture, travel - you name it, they can relate it back to color. [more inside]
you know, you're right... it really does look like my morning coffee. but wait just a minute, didn't we say it was more of a blue-green Tidy-Bowl kind of hue? now i am all confused. good thing i didn't go through with that "paint my house the color of space" idea...