Get a vapor proof light with the cage around it. Some people call them freezer lights. They have started coming with LEDs built in. I like the regular incandescent bulb so you can make it soft or white lighting. But the Leds are brighter.
Anyway go to Dollar general get Pizza pans. cut a half in hole in the middle of it. Put the pan on a conduit drop the light from the half inch conduit, . '(First take it all apart and spray paint it with flat black Char-grill paint)
It gives it a rustic barn look and meets code requirements, too. The customers love them. The material will cost about $40-$50 bucks. The light use to be about 10 bucks. But when they put the Led in them . They went up to 30.
I have put these in Boat houses painted blue. I've used them in Massey Ferguson dealers painted red. Some times the inspector will want to see the paint can. I use engine block paint. But it's the pizza pan that really makes them look nice. Looks like an expensive light.
I wouldn't tell my local competitors this info . LOL