Auto Match Color Tone
In Guided > Replace Background, there is an option at the end to "Auto Match Color Tone"...which matches the tone of your subject with the background image you added. However in expert mode, I don't see what it actually changed. There's simply a Layer mask but I can't find where and how much it adjust the color, tone, etc etc.
Basically I'd like to perform "auto match color tone" manually in expert mode without having to go through the Guided menu.
