https://apod.nasa.gov/apod/image/2104/Pencil_TurgeonMishra_3930.jpg
Holy shit Background
Everything emits light particuliary in the IR spectrum so naturally people glow. I am not alone in having a wide spectrum of vision albeit it less intense in color saturation overall. UV looks really violet to bright black. IR looks like a soft white glow to deep red. Some people glow right through their jeans and clothing when background light is low. For people who do not have this light sensing ability it is imperative to never mention it to them for obvious reasons. Especially religious nuts.