how to change NavigationBar colot in Xcode 5 or ios 7

how to change NavigationBar colot in Xcode 5 or ios 7

I want to change a navigation bar color in Xcode 5/ios 7
[[UINavigationBar appearance] setTintColor:[UIColor blackColor]]; //not work
self.navigationController.navigationBar.tintColor = [UIColor blueColor];//
Not Work