1. a person or thing that applies color to something
Usage: chiefly British spelling; American English typically uses 'colorer'
2. a substance used to add color; a dye or pigment
Usage: chiefly British spelling

Examples

• The colourer carefully applied the dye to the fabric.
• She works as a colourer in the animation studio, adding color to the drawings.
• This food colourer is safe for use in baking.
• The colourer mixed the pigments to create the perfect shade of blue.
• Professional colourers use specialized tools to achieve consistent results.
• The recipe calls for a few drops of red colourer.