For example, how do I apply one of the element colors to an overall site background color?
You don’t. You use the Background color setting. The element colors are only used for things like Buttons, etc.
OK, thanks Joe. However I tried “background color” to get a totally dark background for my entire site but the black bleeds thru everything I add in front! What am I missing. Here is what I’m trying to get:
Then you need to add background colors to those elements.