廢話少說，直接 看程式碼：

   //navigationBar的預設背景顏色
//        UINavigationBar.appearance().tintColor = UIColor(red: 0.2392, green: 0.7137, blue: 0.7451, alpha: 1)
        //navigationBar的預設背景顏色
//        UINavigationBar.appearance().barTintColor = UIColor(red: 0.2392, green: 0.7137, blue: 0.7451, alpha: 1)
        //設定UINavigationBar title的字型和顏色
 

        let titleTextAttributes :[String : AnyObject] = [NSFontAttributeName : UIFont(name: "Helvetica", size: 22) as! AnyObject , NSForegroundColorAttributeName : UIColor(red: 0.2392, green: 0.7137, blue: 0.7451, alpha: 1) as AnyObject]
        UINavigationBar.appearance().titleTextAttributes = titleTextAttributes
        //UITabBar bar 的選中顏色
 

        UITabBar.appearance().tintColor = UIColor(red: 0.2392, green: 0.7137, blue: 0.7451, alpha: 1)
       //tabbar預設的背景色
        UITabBar.appearance().barTintColor = UIColor.clearColor()

關於自定義導航返回按鈕
在 appdelegate 裡面設定

    [[UINavigationBar appearance] setBackIndicatorImage:[UIImage imageNamed:
 
@"Mine_back"]];
    [[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@"Mine_back"]];

如果控制器的導航不顯示文字
在要展示的控制器的上一個控制器新增

    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@""style:UIBarButtonItemStylePlain target:self action:nil];