[i]A[/i]s of now we have OKICAVLRMPG as far as I'm aware.

[i]I[/i]f we specifically want colors here's a list;
 
[hider=coloracronyms]COAL(Coal)

GRAP(Grape)

OLIV(Olive)

CARM(Carmine)

LAVR(Lavender)

CILV(Silver)

APRK(Apricot)

AVCO(Avacado)

CLAR(Claret)

LIAC(Lilac)

GRVL(Gravel)

GRAI(Gray)

COPR(Copper)

KOPR(Copper)

LAPI(Lapis)

LKRC(Licorice)

LIVR(Liver)

MALC(Malachite)

LAIC(Lace)

ORAG(Orange)

PARL(Pearl)

PALO(Pthalo)

PLOM(Plum)

CGRA(Sangria)[/hider]

Note; typed this up before I saw the person with the 'F' name submit a CS, so didn't take that into account.