UITabBarItem icon not colored correctly for iOS 13 when a bar tint color is specified in Interface Builder in Xcode 11, beta 2

There is a new appearance API in iOS 13. To color tabbar item's icon and text correctly using Xcode 11.0 you can use it like this:

    if #available(iOS 13, *) {
        let appearance = UITabBarAppearance()

        appearance.backgroundColor = .white
        appearance.shadowImage = UIImage()
        appearance.shadowColor = .white

        appearance.stackedLayoutAppearance.normal.iconColor = .black
        appearance.stackedLayoutAppearance.normal.titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.black]
        appearance.stackedLayoutAppearance.normal.badgeBackgroundColor = .blue

        appearance.stackedLayoutAppearance.selected.iconColor = .red
        appearance.stackedLayoutAppearance.selected.titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.red]

        self.tabBar.standardAppearance = appearance

    } 

On the surface, this might seem like a bug, however you can mitigate it by defining an .unselectedItemTintColor on your UITabBar instance.

self.tabBar.unselectedItemTintColor = [UIColor lightGrayColor];

Use the attribute field "Image Tint" in IB.