All I want to do is add a background color to a button for all states. But I want to maintain the automatic focus shadow that you get \"for free\" when using a system button
You can set the background image in storyboard to an image that contains the color you would like
You can add a shadow for your custom button like this:
- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
context.nextFocusedView.layer.shadowOffset = CGSizeMake(0, 10);
context.nextFocusedView.layer.shadowOpacity = 0.6;
context.nextFocusedView.layer.shadowRadius = 15;
context.nextFocusedView.layer.shadowColor = [UIColor blackColor].CGColor;
context.previouslyFocusedView.layer.shadowOpacity = 0;
}