One cool thing about the Cup and Saucer is that you can tell which is purple and which is white just by looking at the plant. The purple ones have a purple-ish tint to the leaves and tendrils, while the white ones are plain green. I planted a Cardinal Climber with a white one last year and they looked really nice together. The tiny red flowers with those big white ones was a nice contrast (although the cup and saucer sort of over-ran the poor little Cardinal Climber).
