title: Unable to change the color to tabBar?
body: <p>I have the following method in the parantTabBarController class: 
  There can be seen various attempts made to make the tabBar completely transparent. The only one that worked is the one found at the top.</p>
  
  <pre><code>       override func viewDidLoad() {
          super.viewDidLoad()
  
          UITabBar.appearance().barTintColor = UIColor.clear
          UITabBar.appearance().backgroundImage = UIImage()
  //        UITabBar.appearance().barTintColor = UIColor.blue
  
  //        changeTabBarOpacity()
  //        self.tabBar.unselectedItemTintColor = UIColor(red: 17.0/255.0, green: 70.0/255.0, blue: 95.0/255.0, alpha: 0.4)
  //        self.tabBar.backgroundColor = UIColor(red: 17.0/255.0, green: 70.0/255.0, blue: 95.0/255.0, alpha: 0.0)
  
  //        self.tabBar.backgroundColor = UIColor.clear
  //        self.tabBar.backgroundImage = UIImage()
  //        self.tabBar.shadowImage = UIImage()  // removes the border
  
      }
  </code></pre>
  
  <p>However with this approach I am not able to change the background color of this same tabBar in other view controllers. I have tried replacing the image with a white image, changing the background color: <code>UITabBar.appearance().backgroundColor = UIColor.white</code> But nothing works. </p>
  
  <p><strong>How can I have a translucent tabBar on one page and a white one on all others?</strong></p>