Comment on WordPress Gravatars by Erik.
Any of the “generated” variety, like the kind you are using here on the Stallion theme site, seem to work fine.
But if you select “blank” or “mystery man” in the WP discussion panel, it always defaults to the blue/white “G” design.
I recently did a completely fresh reload of Stallion on a different domain and decided to check how it acted there, and it’s the same thing. Not a big deal, but just letting you know. I do miss mystery man over the semi-ugly G, but in the scheme of things it is minor!
Thanks and best,