Regarding infinite scroll, you can make it work fairly easily without the List offset by selecting a sentinel (last item in the list, 3rd from the last item, etc.) and when a View for that item is needed you now know you’re nearing or at the end of the current list and that it’s time to fetch more data.

As to navigation styling, you can do so, but I wouldn’t rely on it. Try adding the following to your AppDelegate.

UINavigationBar.appearance().backgroundColor = .red