title: Can I change the properties of all the buttons in my Swift app?
body: <p>I have a Swift app that navigates through many view controllers, all with similar appearances.  There are buttons in every view controller for which I have NOT created IBOutlet properties (they all just trigger segues via Interface Builder).</p>
  
  <p>Is there an easy way to change the background color or text color of all the buttons in the app, without changing it for every button in IB, or creating an IBOutlet for each button?</p>