This was meant to replicate the style of Kazuki Takamatsu, known for his work combining depth mapping and intricate ornate patterns (and young girls in lingerie).

It's pretty unstable, but if you feel like to generate some ghostly monochromatic girls, you can give it a try. I don't know if there's any other use for it.

You can start the prompt with

monochrome photo in shades of <color> with black background

and set the strength at around 1.2-1.5