Yes, it was always the celebrities that gave the clues, hence why in
Password Plus the penalty for a celebrity giving an illegal clue was only a $1,000 penalty from the bonus winnings. I always preferred this version of the bonus round over
Super Password because it considered that the contestant wasn't at fault for the celebrity's mistake, and it was a good strategy for the celebrity to give an illegal clue if time was running out and there was one clue left. $4,000 was better than $900, ya know.
I recall an instance on
Super Password when Dick Gautier blazed through the bonus round with about 25 seconds left...only to slip up and say the final word "PURPLE" costing the contestant the win and making him feel absolutely horrible about it. Always disliked that bonus ever since.
EDIT: Found the Dick Gautier episode in question: