Using the control net recolor type allows for prompting for things not currently in your photo that will be added in color only, the new generation will not be in the same style as the original image. This gives a unique effect that looks like paranormal photography depending on the settings and prompts you use. You can prompt for objects, items, people, colors, locations, etc.
Adding solid color borders on your reference image will guide the ai to add ghosting/artifacting to those areas.
This method will work with most models, and some LORA's will accentuate the style and aesthetic of your preferences. Including ghost loras, and lighting effect loras.
Prompting will add and remove elements from the artifacting VFX areas depending on what you detail with your prompt.