Full spectrum lighting makes any animal look INCREDIBLE..might not be permanent, but under that light, they sure look NICE... Especially an iridescent snake. Ever see a Brazilian Rainbow Boa in UVB light compared to looking at it in the boring light at conventions? It's like looking at a different animal. Beta fish breeders even use UVB when taking pictures to help sell their fishy babies

So maybe just try taking pictures under that lighting to see how gorgeous they are Or, even better, in the sun!

Now, my vet has mentioned experimenting with small doses of uvb in nocturnal animals and has noted having some very small improvements in animals like leopard geckos(getting 1 hour of uvb in early morning and 1 hour in the late afternoon to replicate the bit of sun they see in the sunrise/sunset time when they become most active) seeing that the injured animals exposed to small doses of UVB healed quicker than those not exposed to it. Heard the same about pacman frogs, small 1-2 hour doses of a low level uvb every once in a while helping it out some. No clue on BPs though. UVB tends to be pretty bright though, so a high stress snake might not enjoy it too much. They do look awful pretty underneath it, but I wouldn't put one under UVB permanently if it didn't need it. Things like this are constantly debated though.

For my future brazilian rainbow, I might have UVB available, but not on all the time. Mostly just on occasion in the day time when the snake is out and about to 'show off' my snake a little bit. So pretty

But no, I don't think UVB will make the snake look more gorgeous forever. I have seen PLENTY of incredible cbb ball python normals who have never seen the stuff, and plenty of normals with no orange who are wild caught(Like mine, he was wild caught as a yearling, so he had time to absorb the sun rays)