OK ... I do very little PP and normally use just OM2/OV2 for cropping and occasional fiddle with the contrast. If you look at this you'll see an image of mine with a coke-can in the right foreground. I processed this one a little more. In the original colour image, the coke can is of course red. What I'd really like to be able to do is retain the red colour of the can while the rest of the image is mono. I have the RAW file available, and I do have The Gimp, RawTherapee and UFRaw installed. I don't & am unlikely to have Photoshop. Any pointers please?