Related Clues:

• Gone platinum?
• Grew older and wiser
• Got more mature
• Went platinum, perhaps
• Changed the color
• Showing the years
• Matured, as cheese
• Did some coloring
• Went platinum?
• Stained, in a way
• Allowed to improve, as cheeses
• Grew old
• Got ripe
• Became mellow
• Got some seasoning