Very nice! I actually just came across the Elegant Brit theme for Fluxbox last week -- I think it's a very nice style.
I'm not too familiar with Dockbarx though. Do you know if it supports multiple monitors (with Xinerama enabled) well? Or does it need a compositing manager? (The two questions are roughly the same.) I've had a number of problems with other docks such as Cairo and AWN, and I've been looking for a nice dock. A dock with your theme would be quite nice.
As the DockbarX developer I can tell you that DockbarX doesn't need a compositing manager and it's supposed to work with multiple monitors. But since I don't use multiple monitors myself I appreciate any multimonitor user who are willing to report bugs when they turn up.