If on a page without an applied theme, I can select a background and make that background a watermark. After finding the background I liked for my pages, I added it to my theme. The problem I'm having is that I can't find a way to make the background a watermark while it's part of the theme.
If I can pull it off, any page with that applied theme will have the background I've selected and it will be a watermark.
Any and all information will be greatly appreciated.