"Dorelian Dragon (Backdrop ver.)" by Errico Fabricio Espartaco Villa Molina

Oh, wow!!! This photo has caused a whole bunch of ideas and possibilities to wiz through my brain! You say this is a UV backdrop? What is that exactly? I've seen other UV things, and they change color in the light and/or glow in the dark. And just one more question: How did you make it?

Ooh......
Too cool ^_^

Very cool... very unlike... um... stuff... I'm sorry, I guess I'm just not a very inspired comment writer.

you make these with UV (aka fluo) acrylic paints (on huge canvas)
Then you put a UV tube (neon like tube producing black light) facing the canvas which makes the colors from the painting glow vividly.
So there is no confusion, you have to know this is not phosphorescent paint (does not glow in the dark), this is fluorescent paint (glow under UV light)
Both phosphorescent and fluorescent paint can be bought online.
Note there is also invisible fluo paints and invisible phospho paints: these are clear and colorless (invisible) in day light but will glow under UV light (for the fluo one) or in the dark (for the phospho one). For instance, the invisible fluo paint allows you to make a painting that will represent let's say a sunny afternoon by the sea side, with a calm sea and blue sky and people on the beach (under day light) but that will turn into an stormy sea with dark black clouds in the sky and people now running away from the coast (once under UV light)