ok lol forget the stupid reshade crap here's the real deal
servers use icons to simulate lighting, this is also the case for the AI static when there's no camera in a room
(so you can get rid of that too and see literally everything without cams, even space)
this doesn't get rid of the blackness around you that appears when you're in a pitch black area or the one that prevents you from seeing through walls but I've seen someone do it before a long time ago so it should be possible
open cheatengine, hook onto dreamseeker.exe, set value type to string
for baycode/paracode search light1 and (very bad idea, but I can't be arsed to use pointers) select everything and click the red arrow. At the bottom select everything and right click > change value to allahuakbar (just enough characters to remove all lighting, blank works too by telling byond lighting uses no icon but doesn't 100% remove darkness and sometimes does jack)
change back the values to light1 to revert
for tgcode it's pretty much the same but you have to search for white
now, importing everything WILL lead to possible crashes, but that's because you're editing a bunch of values that may have no correlation with this stuff, you could find the exact address(es) yourself if you want but you'll have to do some cheat engine trickery since they keep changing everytime you close the game
to get rid of AI static do the exact same but with black