Green screen with yellow clothes

Hi, I am gonna shoot a man wearing full yellow clothes in front of a green screen to later make a chroma key.

I really can't change the green for blue nor the yellow clothes for any other color (the green studio is borrowed and yellow is the color of the company).

I probably will shoot in DVCPRO, but will try to get an HD camera.

I have done some chroma key in the past, but not with yellow. I wonder if there is going to be any problem.

Any comments?