Here are some apples that don't turn brown because the gene that codes for polyphenoloxydase has been supressed. That means they look fresher and appetizing longer, and self-digest slower than normal apples. I wonder if you'd get a different color cider from these...
"But are they apples now?" Well, yes, given that apples today are nothing like those once found in the wild.
http://www.cnn.com/2017/01/20/health/apples-genetically-modified-on-sale-soon/index.html