Since OS X 10.10 a click onto the green button in any application window invokes the full screen mode for this application (and turns my two other monitors black). Only when I Option-click onto the green button I get just the window zoomed (and my two other monitors' content remains visible). Is there a way to turn this behavior system-wide back to the OS X 10.9 behavior where a click onto the green button simply zoomed the window? I know that I can have this by clicking in the menu bar onto Window - Zoom (at least in most applications, I guess). However, I would like to have this also when clicking onto the green button, if possible. I also know that usually a double click onto the window title bar would zoom just the window. Unfortunately that collides with the Deskovery shading function that I use about hundred times a day. What I am probably looking for is a "defaults" write command that changes OS X general behavior insofar.