I'm having trouble finding info on how (when working with an advanced layout) to get the css to work on the calendar pop-ups (when you click on a scheduled event).
Right now mine is very out of sync with the basic look of the site.
It looks like the calendar popup does not use the custom css once you switch to an advanced layout. It still uses the default css and background. This means that advanced layout users will need to actually go back into the basic color configuration and modify the settings there to match their css.