Terrible title, I know. Bear with my awful naming skills For the Black & White contest at Stewed-Tomatoes I'm entering under Level 2, intermediate.
It's basically dead spirits clinging to Death in the gap between death and life, trying to find a way back to the living world. Had this idea when I saw the prompt was for a manipulation with no colour. I thought it matched my concept: there is colour in life and in the afterlife, but not in between.