I have seen 'Tricolor' and 'Variegata' in one northwest garden for the past three years, and they are great multi-colored varieties, both with purple flowers. Wiri-Charm' is the one I mentioned that bloomed all winter in my garden, this past year. The flowers are fuchsia colored. The plant is only supposed to grow 12 to 16 inches, but mine is already about 24 inches tall. Some of these varieties may be difficult to find at nurseries, because they are so new to us.
Growers say the smaller leafed varieties are hardier plants.
So if you are at a higher elevation or in a colder climatic zone, then west of the Cascades, those are the ones you may want to try growing.