The nucs I bought had quite a variety of frames in them: wired wax, black pierco, and so on. The bees didn't draw the plastic as fast as the wax, but they did draw it, eventually.
I bought a few of the green drone frames to do varroa IPM. As soon as a flow was on, the girls started drawing it (and I have eggs in one frame, as of last Sunday).
All in all, I think they like pure wax better, but will accept plastic. And I agree that eggs are easier to see against the dark background.