title: What is the right way to set back button arrow tint in ios 13
body: <p>In ios 13, Apple introduced the new UINavigationBarAppearance proxy object to set the navigation bar appearance. I've been able to set almost everything I needed except one small thing. The back button's arrow is always rendered with blue tint color and I have no idea how to set it to the color I want. I am using the old <code>[[UINavigationBar appearance] setTintColor:]</code> way, but I think there has to be some way to do it with the UINavigationBarAppearance objects API. Anybody has any idea how?</p>