For example, let's say I want to change all instances of RGB #FF0000 to RGB #FF8888. I have read the manual entry on the Similar Colour Selection tool, but this doesn't say how to effect the change.
For example, let's say I want to change all instances of RGB #FF0000 to RGB #FF8888. I have read the manual entry on the Similar Colour Selection tool, but this doesn't say how to effect the change.