Related Clues:

• Turns green, say
• Food colorings
• Henna and indigo, for two
• Covers the gray, say
• Colorful vatfuls
• Revisits an earlier time
• Changes colors, in a way
• Dressmaker's solutions
• Turns green, perhaps
• Food factory stock
• Lab stains
• Goes right or left
• Gray disguisers
• Reactor safety agcy
• Tannery supplies