Blue Curves Not Showing Up In Clipping Mask
Hi! I'm currently trying to add a blue glow around my subject using a Curves Layer and then clipping that to the subject, and I was getting SO CONFUSED when what I was trying to paint in was not showing up. After about two hours (lol) of digging this is what I've noticed.
This is the image I'm working on so you can see where the detail I'm wanting to paint in is:

This is it zoomed in to the pixels of a small strand of hair:

Normal Colour Fill Layer, no clipping mask:

Normal Colour Fill Layer, WITH clipping mask:

CURVES Layer, no clipping mask:

Curves Layer WITH clipping mask:

And this is it zoomed out to show the difference:


I am losing my mind trying to figure out what's happening! I've noticed it does the same for Red and Green, but works for Cyan, Magenta and Yellow, so I'm wondering if this is because of something technical with the RGB values???
Thank you in advance!!!
