There are sure lots of OD "themes" that I would like to try. I download them as zip files, but can't figure out how to install and run them. I've tried the theme manager. When I go to "add" and click on the zip file, little seems to happen. I get a "background" added, that doesn't display in the preview window. And although these "backgrounds" appear in the OD dialog for installed themes, I can't figure out how to use them or if there is a problem I don't know about. Which is what I suspect.