Are These the White Coneflowers or the Purple?

My 'Raspberry Wine' monarda has started to encroach on 'Marshall's Delight'. I've long since lost the dividing line between the blue Siberian iris and the white. Every year I have the best intentions of restoring order in my perennial border, but when it comes time to do it, I'm scratching my head to remember which plants were what color. Then the son of a friend stated the obvious and made the job so much easier.