I have the 'Fantasia' cultivar that I purchased from Hadley Cash in 2005 - about to be divided for the umpteenth time. Yes, it grows like a weed and blooms at any time of the year.
When I grew it in PA, the colors were quite similar to those above, but summer bloomings here in NC tend to keep the pouch less red. I suppose I could raise it in the air conditioning, just inside the window where it is now outside, but it's SO much easier to water on the deck, and typically gives about 8 consecutive blossoms outdoors, while only about 4 or 5 indoors.