Basic 11 Colors :
(from Berlin and Kay, referred by Color FAQ
by Charles Poynton. Many languages have next basic 11 colors.
http://www.inforamp.net/~poynton/ (no link?)
- white, black, red, green, yellow, blue, brown, purple,
pink, orange and gray.
- Japanese proper color
names (which can be used as adjective without the
word ``color.'') : white, black, red and blue. Other
color should be add the word color. Like shiroi, kuroi,
akai and aoi, but, no kii and no chai. These cases, you
need the word iro(color), like Ki-iro-i and Cha-iro-i.