UINaviagationBar ignoring background color settings : <p>ios 13, objective-c, can't get the navigation bar background color set.</p>

<p>I've tried setting the color via the UI in interface builder, and several examples off the web (and here).</p>

<pre><code>UINavigationBarAppearance* navBarAppearance = [self.navigationController.navigationBar standardAppearance];
navBarAppearance.backgroundColor = [UIColor colorWithRed:172.0f green:193.0f blue:197.0f alpha:1.0f];
</code></pre>

<p>I would expect the above code to set the background color, but it's still white.</p>
