Here is a page, by imalittlecrackerjack, that uses just Pale Plum, Perfect Plum and vanilla..
Gallery at Splitcoaststampers
I like the feminine look of Kallien's page (barely banana, perfect plum, mellow moss, naturals white)
Gallery at Splitcoaststampers
Those are both great choices, but actually I like the scrapbooks that use just a two-color theme, and Pale Plum with Black accents would be stunning. It involves using a couple of layers per picture to make the black part be mostly an accent. Do you have one of those clever corner punches that make it easy to slip the photos in? If you look in the gallery at scrapbooks you'll find something similar.
P.S. Is your friend putting on a big party?? If she can find balloons, streamers, paper plates and tissue paper in something resembling Pale Plum she's all set, as black is easy to find. Don't know where she lives, but the stores around here still have pots of chrysanthemums that are really close to the Pale Plum color.