#tawin

Kun and ron are really the only 'true' colour names. 'Ron' is 'warm colour' (red, orange, yellow) and 'kun' is 'cool colour' (green, cyan, blue). There's also the word 'lin', just meaning 'colour'. If you want more specific colour terms, you have to combine them.

Rosin (warm_colour-left) is red, ronyn (warm_colour-neutral) is orange, and roden (warm_colour-right) is yellow. Kusin, kunyn, and kuden are green, cyan, and blue respectively. Rokun is pink and kuron is purple.

Liwin (colour-space) is black and lilon (colour-light) is white. Linyn is the typical name for grey, but liwilon could be used to imply a dark grey and lilowin could be used to imply a light grey.

Adding -wi- and -lo- to colours makes it lighter or darker, so rowin is brown.

Those are all of the 'official' names, but you could combine the word colour with other stuff, for example, 'lifen' (colour-animal) to refer to that grey-brown colour that a lot of wild animals have.

*Note: All of these colour words I've listed are in noun form. Replace the -n with -t to make it an adjective. 

**Another note, is that these terms cover ranges. Kunyn & kuden, kuden & kuron and kuron & rokun (all blue-spectrum colours!) can especially overlap.