Show Skin tone indicator on Hue Curves Panel

It will be great to optionally display the Skin Tone Indicator on Hue Curves Panels, it will be extremly useful in Hue vs Hue graph.

Captura de pantalla 2021-07-23 a las 19.03.24.png (744.74 KiB) Viewed 622 times

it's about half way between red and yellow.

however, I will prefer the ability to add a custom vector (with the default in the skintone): often the ideal value is client dependent and it can be off that "magic line"

Thanks Walter