All these stands are FREAKIN' AWESOME!!!!
AnotherHobby, One of the Big Box pet stores, I think PetCo, has a "clamp light" that is Black with a white interior and has a ceramic bulb holder, and they look VERY NICE!!! They are not nearly as big around as the "shop" type clamp lights, but I believe they are 6" in diameter. I am not sure how big around those Par38 led bulbs are, but IF they would fit in the fixtures I am talking about they would look AWESOME with your stand design!!!
I will see if I can find a link and PM it to ya!
Again GREAT WORK EVERYONE!!!