1mb LORA that's trained on single picture featuring limited blue pallete with illumination.
Main trigger: limited palette
Refer to examples to see possible results, aimed for result is at strength 1, but feel free to experiment.
You can also use LORA without trigger for some interesting and less transformative outputs. It also has small tendency to sometimes add more people when using 1boy\1girl prompts, so add 2boys, multiple people, etc., into negatives if that happens.