I would love to spend an afternoon wandering around your place!

It is very typical for Shima Nishiki. It can have mixed red and white, pure red, or pure white (not seen as often) blooms. When it is young, it is more often to have single color blooms (usually red). The mixed color ones appear when the plant is more established, just as yours. The pure red flower resembles one of its parentage, Taiyo (the sun).