I Came Up With An Undertale AU Called Underglow Or Glowtale, Tell Me How It Is And If Someone Else Came

I came up with an Undertale AU called Underglow or Glowtale, tell me how it is and if someone else came up with it please. Any bit of critique helps. :)

It's call Underglow or glowtale, each monster in the underground have unique patterns on them and they glow because they adapted to how dark everything was, they don't have little bursts of sunlight down there and the colours change based on how they're feeling, the older monsters like Toriel, Asgore, and Gerson don't have the prominent glows because they use to be on the surface, but they have a faint glow because since they're magic their own bodies have adapted a bit to their surroundings, instead of flowers (besides echo flowers) there are mushrooms everywhere and when you touch them they glow. The ruins are still like the ruins but dark and no leaves, but instead of purple it's black and blue, like waterfall but bricks, snowdin still has snow, but there's more ice than anything, but people still call it snowdin, waterfall is the same, but instead of flowers for the bridge it's big mushrooms, and hotland is the only source of light because of the magma, but nobody really goes there because it hurts their eyes, but people still needed to go through it, so when they go there they just put on goggles to block the light, and they can't glow there unless their emotion is REALLY strong, and you can still barely see it. New home is the same, just a little darker since everything is grey, but there's no golden flowers in the throne room, but all of the plants you see in waterfall (besides the flower bridges). Frisk fell down because they couldn't see where they were going and tripped on some rocks, flowey is a sentient echo flower and that gets annoying since everything they say or what someone else says is constantly repeated.