If you’ve only ever had dry supermarket pita, this is a different animal entirely: puffed up like a pillow, savory on its own, and ready to scoop up anything you like.
If you can't find both red and yellow beets, just use all of one or the other, and pickle everything in one bowl. The pickles keep, refrigerated in an airtight container, for up to 2 weeks, making them perfect for snacking with holiday leftovers.