Xcode 5 is nice… but it has habits that drive me up the wall. For example, no matter which Base SDK you compile with, your Navigation Bars will always look translucent – no matter how hard you try to avoid this in the Storyboard, and no matter which iOS Version you deploy to.
Would have never happened under Xcode 4. But I suppose we must go with the times.
All we can do is to turn it opaque in code – and if we’re not using black, at least give iOS 7 a tint of your selected colour at the same time. This method will take a UINavigationController and change its colour:
- (void)navBarColour:(UINavigationController *)navController {
    
    if ([navController.navigationBar respondsToSelector:@selector(barTintColor)]) {
        
        // we're running iOS 7
        navController.navigationBar.barTintColor = [UIColor blackColor];
        
    } else {
        
        // we're on iOS 6 and before
        navController.navigationBar.tintColor = [UIColor blackColor];
    }
}
Note that on iOS 7 your navigation bars are always translucent, I haven’t found a way to change this. All you can do is “tint” those. The above code will however bring opaqueness back into your apps when running on iOS 6.
