And not that I'm getting my feathers ruffled, but I happen to think mine is also clean. The plants are lifted up, by whatever I could find that would fit, to get close to the lights.

One thing they don't point out is the blasting light that will come out.
As for the exterior of my case, I was going for the them of my office, which is a Computer repair shop, a brand new case would stick out like a sore thumb.