Related Clues:

• Lock changers?
• Colorants
• Does batik
• Rugmaker's inventory
• Turns red, perhaps
• Hides grey, say
• Darkens, in a way
• Lightens, perhaps
• Colors, as Easter eggs
• Isn't a natural
• Turns green?
• Tattooist's supply
• Hides the gray
• Salon bottles
• They can create highlights