UITabBar tintColor is not changed storyboard

Question

I have set a global tintColor, and I can see it in the interface builder, when I select UITabBar as well as UITabBarController, still when I run the application, the tint of the selected UITabBarItem is iOS default (blue), and not what I have set. What am I missing?

P.S. UITabBarController is pushed to navigationController, it is not the rootViewController