To add on to Margo, actors who cover, swing, or understudy:
They usually have two options: they can take their normal weekly plus 1/8 extra per performance, or they can take 7/8 of their weekly plus what the performer they are covering for would get paid for that show. There are, of course, exceptions to this rule. But, most choose option 1 (as it usually is a better salary). Does that make sense?
Also, andrew, I have a few friends on the les mis tour, and (at the very least) thenardier and eponine are not pink contracts. Were they, really at one time!? I'm surprised AEA ever let them get away with making those non-white contracts!!
"Fundamentalism means never having to say 'I'm wrong.'"
-- unknown