In 2016, I found at my local Meijer's store, Grandstand™ Red. It was the only color that they had when I made my purchase at the time. I heard later that they also had Grandstand™ Purple.
I only got one pot of it, but I wished I'd gotten more. It sat on our front porch that gets morning sun and afternoon shade and I didn't get around to potting it up, but it bloomed its head off in the one-gallon pot on the porch. I've been wanting to find more plants of the Grandstand series, since then. Also would like to find pots of the Saucy series.