func navigationController(navigationController: UINavigationController, willShowViewController viewController: UIViewController, animated: Bool) {

        if (navigationController.viewControllers.count == 3) // Indicates UIImagePickerController editing view
        {
            // Remove default crop rect layer
            let plCropOverlay : UIView = viewController.view.subviews[1].subviews[0] as UIView
            plCropOverlay.hidden = true

            // Set bottom bar color
            let plBottomBar : UIView = viewController.view.subviews[1].subviews[1] as UIView
            plBottomBar.backgroundColor = UIColor.blackColor().colorWithAlphaComponent(0.8)


            // Set circular crop overlay
            let fillLayer : CAShapeLayer = CameraController.circleCropOverlayLayer(bottomOffset: 72.0)
            viewController.view.layer.addSublayer(fillLayer)
        }

    }