If your trying my suggestion above, make sure you use a "button" not a switch. A switch will go on/off, a button is a simple "push" = all off. Thinking about it you could also have the button trigger a "Scene" where all light are off as well. I think both would give you the same end result. "push" = all off
EDIT: If you want to leave lights on HUE you could consider the Hub Connect App to bring devices into HE for control both ways as needed.
