Possible Clues:

• Negotiation-ending words
• Thus one shows agreement, more or less
• 'Point taken'
• *"That's reasonable" (In each starred clue's answer, note letters 4-7)
• Very well turned-out figure on a horse
• Sufficiently like Marilyn Monroe to be pretty OK (4, 6)
• For guinea, worked hard, OK?
• Response to a compromise offer
• Not too dark? Agreed
• Plenty required to support carnival? I agree