The colouring of something is the colour or colours that it is. 色彩
noun [具体名词] 着色；色彩；抛光；倾向性；外貌
Other countries vary the colouring of their bank notes as well as their size. 其他各国钞票的色彩和大小各异。
verb [vt. 及物动词] 把……涂颜色；变色（colour 的 ing 形式）
Blue suited her fair colouring. 蓝色适合于她白皙的肤色。
