1. the natural color or pattern of colors on an animal or plant
Usage: British spelling; American English typically uses 'coloration'
2. the process or result of applying color to something
Usage: British spelling; American English typically uses 'coloration'

Examples

• The bird's bright colouration helps it attract mates during breeding season.
• The butterfly's distinctive colouration provides camouflage in its natural habitat.
• Scientists study the colouration of deep-sea fish to understand adaptation to darkness.
• The artist's careful colouration of the illustration brought the character to life.
• Seasonal changes in the fox's colouration help it survive in different environments.