Related Clues:

• Chromotrope
• Nonessential food ingredient
• Indigo dye source
• Indigo plant
• One way to remove a spot?
• Turn black, in a way
• Turn red, maybe
• Indigo source
• Dye-yielding plant
• Do colorful work
• Just for Men product
• Change the locks?
• Cover-up of a sort
• Salon color
• Turn blue, maybe