Related Clues:

• Add highlights
• Tattooist's supply
• Tie up and dunk in liquid, perhaps
• Add some color to
• Eggs may be dipped in it
• Pigment
• Turn blue, e.g.
• Turn green, say
• Stain's kin
• It won't run if it's fast
• Go blonde, say
• Turn red, say
• Hue changer
• Food coloring, e.g.
• Colouring agent