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");
}