My snake vet recommended that I get some sort of artificial light for my snakes. She said that while it isn't necessary, the snakes enjoy it.
I'm not sure if I agree with her or not... although since then, I have put full-spectrum florescents on a timer in the snake room... just in case.
Also, I don't get the OPs t about it being an outlandish question? Sounds like a perfectly reasonable question to me. It gets asked about twice a month here. And lots of people, including me, simulate day/night cycles.
PS.... were you saying that you would dim the LEDs to simulate sunrise and sunset? Because that is an interesting idea. Especially since corns are crepuscular.