Cleaning up printouts

[headspace]

Is there a way to turn off the object background colours just for printing? When I print a class diagram, for example, all the class boxes have a faint stipple pattern, which blurs the text. The drop shadows are all that are necessary to make the blocks stand out. I realize I could switch all the colours to white, but I like them on the screen, and I don't want to have to change them back and forth just to print.

Any suggestions?