Well looks like someone else had the same thought I had and did a http://www.nexusmods.com/fallout4/mods/4380/?tab=1&navtag=http%3A%2F%2Fwww.nexusmods.com%2Ffallout4%2Fajax%2Fmoddescription%2F%3Fid%3D4380%26preview%3D&pUp=1 about it

The game is made so bodies glow in the dark, so if you use a mod that make nights darker, you will not have any trouble locating bodies in night time atleast.

Myself, I use a mod that removes the body glow, since the darker nights mod I use make the bodies glow like beacons in the night..

happened to me twice. both Legendary creeps.