public static void Initialise() { UINavigationBar.UINavigationBarAppearance navigationBarAppearance = UINavigationBar.GetAppearance(new UITraitCollection()); navigationBarAppearance.BarTintColor = new UIColor((nfloat)(70 / 255.0), (nfloat)(130 / 255.0), (nfloat)(180 / 255.0), (nfloat)(1.0)); navigationBarAppearance.TintColor = new UIColor(1, 1, 0, 1); navigationBarAppearance.TitleTextAttributes = new UIStringAttributes { ForegroundColor = new UIColor(1, 1, 1, 1) }; }