coloring

definition: the act or process of changing the color of something
example:
speech part: noun
synonyms: colouring
definition: a visual attribute of things that results from the light they emit or transmit or reflect
example:
speech part: noun
synonyms: color colour
definition: a digestible substance used to give color to food
example:
speech part: noun
synonyms: colouring

How coloring is being used?