The stone paint is very durable, especially with a good top coat applied. The first series of pics shows the old viv with red stone paint + generic clearcote. That setup was extremely durable....so much so, that sanding it down wasn't practical (wouldn't come off), so I just painted over it after roughing up the surface.
I just started using the new viv, so I can't comment on the durability of the new paint...however polycrylic is very durable on its own, so I am not anticipating any issues.
The light fixtures are part of this -
http://www.reptilesupply.com/product.php?products_id=2122. It comes in 3 sizes for, 24", 36", and 48" light tubes (T8 or T12). It supports 2 separate tubes, and as you can see in the pictures the end caps are loose...allowing you to hang the lights wherever you need them. If it wasn't for this thing, I'd be up the creek so to speak, as I simply have no room for full size fluorescent tube fixture. After getting a couple bad Mega Rays, which resulted in my male dragon having eye issues, I had to make the switch to repti-suns. I am very pleased with this fixture overall. It uses a high quality electronic ballast with zero flicker or humming. Each socket is at the end of a 4ft long cable, so its really easy to mount them where you need them. I have one straight across the back of my viv, and one diagonally over the 2 basking spots. With the extra wire length, I can adjust the height of each tube as needed.
My viv and lighting setup are really designed for a good MVB, but I'm pleased enough with the new fixtures that I'll probably never go back.