Shift a range of Grays to a range of Another Color

[Ofnuts]

(03-20-2021, 10:32 PM)mholder Wrote: I suggest you change your workflow to masking layers.  I'm not totally sure what you are trying to do, but I think using each color as a layer and then using masks is easier to manipulate than trying to select by color and working in another image.

Here is an example of what I mean:

I just changed the color in the top layer...

   

(produced with ofn-perspective-stack)