If I have an image that has plenty of a certain hex colour A in it, and I want to change all pixels of that colour to another hex colour B, how do I do that?
I want it to intelligently convert pixels of other colours, i.e. a colour that is half-grey half-A becomes half-grey half-B, a pixel that is transparentesque A becomes transparentesque B, and so on.
How do I do this on paint.net or possibly with any online tool available.
Sonja