Here are 2 workflows that contain the node LayerColor: AutoAdjust:

1.

Size: 44015 bytes

URL: https://github.com/inf-monkeys/Comfyfile/blob/1976744391cd04ff6238ca3d40804d23e4a4a180/workflows/Portrait2ID-Photo/workflow.json

2.

Size: 90562 bytes

URL: https://github.com/chflame163/ComfyUI_LayerStyle/blob/b1b7a6ce985d5cdea57e755be53a418b3e96472b/workflow/layerstyle_all_nodes.json