Just edit your "black box" module and choose "theme" instead of a color. When the lens is published, the black box background will coordinate with the lens theme itself.
I've done this on several of my lenses and just love how it looks. Today I updated a lens using the "clouds" theme and updated the black boxes on that lens. Love how they look and wanted to share one here just in case you haven't tried doing this yet. Isn't it pretty? (You can see it on the lens here.)
Have you used the "theme" option for black boxes on your lenses? Which is your favorite?
