废话少说，直接 看代码：

//navigationBar的默认背景颜色
// UINavigationBar.appearance().tintColor = UIColor(red: 0.2392,green: 0.7137,blue: 0.7451,alpha: 1)
        //navigationBar的默认背景颜色
// UINavigationBar.appearance().barTintColor = UIColor(red: 0.2392,alpha: 1)
        //设置UINavigationBar title的字体和颜色
        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 的选中颜色
        UITabBar.appearance().tintColor = UIColor(red: 0.2392,alpha: 1)
       //tabbar默认的背景色
        UITabBar.appearance().barTintColor = UIColor.clearColor()