Related Clues:

• Go green, maybe
• Change color, perhaps
• After start of romance, current writer's become tender
• Mature — or mature to a point
• Develop and rent space
• React to mold, as cheese
• Grow red, say
• Achieve peak juiciness
• ... to develop rook first, then knight, following training
• Mature, like fruit
• Mature, as a peach
• Redden, perhaps
• Mature player originally employed by French FA
• Become edible, as a fruit
• Approach peak flavor