For the lack of a better title, what I mean here is, say you have black as your darkest color for design A, and a maroon as the darkest color for design B.
While customizing my new Arch and Openbox setup, I was generating menus with menumaker, but I wanted at least the Applications part of my menu to update as soon as new applications are installed. So, I needed an application specific pipe menu to fulfill this purpose.
JGD-Black is a theme collection for GTK applications and Openbox. This collection will style your desktop with glass buttons, pure black top level menus, subtle gray shadows and borders.