Noun

1. A digestible substance used to give color to food
2. A visual attribute of things that results from the light they emit or transmit or reflect
3. The act or process of changing the color of something

Verb

1. Modify or bias
2. Decorate with colors
3. Give a deceptive explanation or excuse for
4. Affect as in thought or feeling
5. Add color to
6. Change color, often in an undesired manner