I'd like to be able to automate the process of finding a color's opposite saturation or brightness level in Photoshop. (eg. opposite of 93% saturation is 7% saturation; opposite of 48% brightness is 52% brightness). 

I'd like to avoid Actions or Smart Objects or anything that involves manual clicking. I'd like to be able to simply paint any color on some particular layer, and the layers above it would automatically convert it its oppositely-saturated or oppositely-brightened color. 

I figured I'd be able to do this with Adjustment Layers, but haven't found a way. I also played around with Layer Styles (using Color Overlays of Difference, Exlusion, etc.) but also couldn't find a way (perhaps with clever use of "Blend if"?)

Any ideas on how I could do this? Thanks in advance.

UPDATE: I included a pic to better illustrate what I need

[![enter image description here](https://i.imgur.com/iL2eW47.png)](https://i.imgur.com/iL2eW47.png)