I have a horizontal menu in which some buttons have dropdowns. I would like the background of only the buttons with dropdowns to change color, so that it will look like a tab with a dropdown attached. Otherwise, for the other buttons, I don't want to add a background color change.

So far, I can only figure out how to do all or none (ie. all top-level items change background color or none), but I can't figure out how to selectively apply a background change to only the top-level items which have a dropdown.