Source : WordNet®

colouration
     n 1: the timbre of a musical sound; "the recording fails to
          capture the true color of the original music" [syn: {color},
           {colour}, {coloration}]
     2: appearance with regard to color; "her healthy coloration"
        [syn: {coloration}]
     3: choice and use of colors (as by an artist) [syn: {coloration}]