Related Clues:

• Getting on
• Got on in years
• Went from blond to brunette, in a way
• Got gray
• See 21-Down
• --- in the wool
• Not natural, perhaps
• Like wine
• Matured, as wine
• Ripened
• Like mellower wines
• Not the original color
• Seasoned
• Like some cheeses
• Unnatural, as hair