That's pretty much what mine looks like, too, although I would say mine is more gray than black ... which makes no difference at all.
I do remember that to fit the little watering tractor, I had to get a hose with a diameter of 1", rather than the smaller kinds usually available in retail stores. The hose is great, but darned heavy for an old biddy like me to have to lift. Good thing I have helpful friends and neighbors around.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams