I have the below set in my viewDidLoad:
self.navigationController.tabBarController.tabBar.tintColor = tintColor;
self.navigationController.tabBarController.tabBar.alpha = 0.7f;
I have set the alpha so the background image in my view bleeds through (giving the UINavigationBar a deeper color)
However when in iOS7 the code works fine when the app is started, but when I leave the view and then return the alpha setting has gone (and I am left only with the tint).
It works fine on the simulation on iOS6, but just not in iOS7, could this be a conflict of setting due to iOS7 new UINavigationBar features?
You might like to try something like this:
[[UITabBar appearance] setTintColor:[UIColor redColor]];
[[UITabBar appearance] setBarTintColor:[UIColor yellowColor]];
That should change the tint color of tabbar in iOS 7.
Also here is a link to a detail tutorial of how to munuplate the tabbar color also offers some source code.