Beautiful flowers, as always, @r2cornell.

I'm not sure about the possible meaning of the color combination in this particular flower, but it is really exquisite.
Pink and white are usually associated with innocence and purity; to have the two colors combined in such an elegant flower with such terse petals is a unique spectacle.
We have in venezuela a plant we call peonía, but is actually the seed (Huayruro/Ormosia), some sort of bean, red and black, usually used to make bracelets (especially for babies as protective amulets) and necklaces.

We had some varieties of cayenas in my mother's house, some of which displayed the most amazing combinations of colors in the very same flower. There was one single petaled that had white and pink interspersed (one petal of one color, the next of the other).