WebExpress.TabView.BlackButtons C# (CSharp) Méthode

        private async Task BlackButtons()
        {
            MenuButton.ImageSource("menu.png");
            MenuButton.RippleColor(Colors.Black);
            Back.ImageSource("back.png");
            Back.RippleColor(Colors.Black);
            Forward.ImageSource("forward.png");
            Forward.RippleColor(Colors.Black);
            RefreshButton.ImageSource("reload.png");
            RefreshButton.RippleColor(Colors.Black);
            BookmarkButton.ImageSource("bookmark.png");
            BookmarkButton.RippleColor(Colors.Black);
            StopButton = "stop.png";
            mainWindow.TabBar.getTabFromForm(this).CloseTab.ImageSource("close_Tab.png");
        }