Possible Clues:

• Unprejudiced
• Willing to consider new types in 14 down for Frank and Old Penny dressed-up in denim
• Liberal old writer cared
• Willing to listen to Frank and Old Penny head over heels in denim
• Frank is looked after by liberal
• Unbiased old author raised objections
• Willing to listen to Frank and Old Penny dressed-up in denim
• Started to welcome care, being tolerant
• Old inscriber inclined to be unbiased