title: Swift + NSViewController background color (Mac App)
body: <p>I am trying to change the background color of my View. The View Controller class is <code>NSViewController</code> type. </p>
  
  <p>How this can be done? In iOS UIKit (<code>UIViewController</code>) there is <code>self.view.backgroundColor</code>, but <code>NSViewController</code> doesn't have that.</p>
  
  <p>And second problem is how can I change the color of the applications Title Bar? I think the background color doesn't affect to that.</p>
  
  <p>Mac application, language Swift. XCode 6.1.</p>