( BrE ) ( NAmE col·or·ing ) / ˈkʌlərɪŋ; NAmE / noun
1.
[ U , C ] a substance that is used to give a particular colour to food :
red food colouring
2.
[ U ] the colour of a person's skin, eyes and hair :
Blue suited her fair colouring.
3.
[ U ] the colours that exist in sth, especially a plant or an animal :
insects with vivid yellow and black colouring