Richard is a tad redder than Negligee, but the difference is not as perceptible as William vs Pink Dune. It is very hard to capture the subtle difference between Richard and Negligee, but yes, there is a difference, albeit small. These are not the best photos (using iPhone 6+) but from an angle, you can see that Richard has more red tones while Negligee has more yellow/orange:
I typed Richard and Negligee so many times that I became amused wondering what Mr Ford would think of Mr Buckley in a negligee.