col·or·ing (US) or Brit col·our·ing 
/ˈkʌlərɪŋ/ noun
plural col·or·ings /ˈkʌlərɪŋ/ noun 1 [noncount] : the act of adding colors to something (such as a picture in a coloring book)
▪ Her favorite activities include playing with stuffed animals and coloring. 2 : something that produces color [noncount] ▪ Our product contains no artificial coloring or flavoring. ▪ She added some blue food coloring to the icing. [count] ▪ artificial colorings ▪ (US) a variety of hair colorings [=(Brit) colourants] 3 [noncount] a : the color of a person's skin and hair
▪ This scarf will look great with your coloring. ▪ He has very light coloring.
b : the color of an animal or plant
▪ a bird's bright coloring [=coloration] 4 [noncount] : the way color is used
▪ His paintings are notable for their bright coloring.
▪ Her favorite activities include playing with stuffed animals and coloring.
▪ This scarf will look great with your coloring. ▪ He has very light coloring.
b : the color of an animal or plant
▪ a bird's bright coloring [=coloration]
▪ His paintings are notable for their bright coloring.
