Gray with age
Else clues• Ancient
• Antediluvian
• Far from innovative
• Frost-covered
• Gray-haired
• Grayish white
• Grizzled
• Like the Ancient Mariner
• Long in the tooth
• Old and gray
• Old as the hills
• Really, really old
• Showing age
• Stale
• Stale, as a joke
• Timeworn
• Too familiar
• Venerable
• White with age
• White-haired with age
• Wintry white