IPA: /ˈkʌlər/
KK: /ˈkʌlər/
A person or thing that colors something, often used in artistic contexts.
The colourer added vibrant shades to the painting, bringing it to life.
Colourer → It is formed from "colour" (from Old French *color*, meaning hue or tint) and "-er" (meaning a person who). A colourer is a person who applies or creates color.
Think of someone who adds 'hue' ('colour') to something — the '-er' just means a person. A colourer is someone who brings color to life.