Wow, great pics! They look very similar, don't they? Mine was a wrongly-named ebay purchase from a few years ago, it could very well have been a mis-named Rhonda Kay that was sold as Robert Strawn.
Notice how the tips of the anthers are also albino as well as the petals?
I wonder if it could be a genetic mutation OR physical damage in the early bud stage, like from snails or whatever. Either way, I wish it would happen more because it's really cool.