chromatic (adj.) Look up chromatic at Dictionary.com
1590s (of music), "progressing by half-tones;" 1831 as "pertaining to color," from Latin chromaticus, from Greek khromatikos "relating to color, suited for color," from khroma (genitive khromatos) "color, complexion, character," but chiefly used metaphorically of embellishments in music, originally "skin, surface" (see chroma).