chromatic colour

NOUN
16 LETTERS · STARTS WITH C

chromatic colour is a valid 16-letter word worth 26 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3H4R1O1M3A1T1I1C3C3O1L1O1U1R1
3 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 3 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =26 PTS
DOUBLE WORD → 52TRIPLE WORD → 78
MEANING

What does chromatic colour mean?