I would paint it- make it look like one piece- the color??? If you have tool boxes/carts/cabinets and/or the machinery is all one color- maybe that color. Or maybe give it that Craftsman look- the cabinet "red" and the drawers/doors charcoal/blk.
If I stained it I'd probably go overboard and make it look like a piece of furniture- then I'd probably use "very colorful" language the first time it gets nicked, dented, or otherwise damaged! With paint, it's an easy dab repair.
