Related Clues:

• Achieve peak flavor
• Brown, perhaps
• Darken or lighten, say
• Cyanine, e.g.
• Prepare Easter eggs
• Grow to maturity
• Become harvestable
• Get red, perhaps
• Colorist's purchase
• Make blonde, say
• Reach perfection
• Change locks?
• Artificial color
• Become more mature
• Easter egg brightener