Im not sure if it is possible to identify from a photo but i would love to have a name to go along with this streptocarpus. Click on picture to enlarge or see more pictures.
It is hard. The leaves look like Streptocarpella Concord Blue, the flowers - S. saxorum, but saxorum has more rounded and plump leaves.
Look at the pics.
Here is a link that might be useful: GesneriadWeb
Your right on the button with your ID...I just bought this exact plant the other day Streptocarpella Concord Blue is on the plant tag...I loved the website you posted...did not realize there are so many different colors.
That's interesting how different people perceive variety.
For me streptocarpus subgenus streptocarpella doesn't have that many different colors, at least what's available in culture - the hybrids. What I saw is slightly different shades of purple blue from baby blue to more purplish and and albino white of the same type.
I guess I am spoiled by the colors of hybrid streptocarpus subgenus streptocarpus...
You lucky guys in CA can grow them in hanging baskets outside and enjoy their bloom without complaining how much space it takes and how spent flowers are littering the floor...