Does anyone know if these fixtures are original (ignore the dirt dobber gunk)? There are 3 in my trailer--2 have these outlets in them, one does not. Did they ever have shades? It doesn't look like they did, because there are no screws around the edges to hold a fixture. These still work, so I think I'm going to clean them up and reuse them (the outlets are handy!), but the bare bulb isn't really all that attractive. I found some tiny lamp shades that might work, but just wondering if there was another option.