the colours, or the patterns made by these colours, that are present on an animal or plant

Predators learn not to attack these frogs because of their bright colouration. 因为这些青蛙的绚丽色彩，捕食者学会了不去攻击它们。

Growing the plant in full sun ensures attractive leaf colouration. 让这种植物在充满阳光的地方生长可以保证叶子颜色很漂亮。

I have learnt the difference between piebald (black and white) and skewbald (brown and white) colourations.

the colour or colours of something

The chart gives you a guide to the colouration of the particular beer you are ordering. 该图表为您提供指南，可以看到您所订购的啤酒的颜色。