Some of my images appear to have weird color problems in the pixels when magnifying. For example, if I magnify a groom's black lapel, I'll see all sorts of pixel discoloration of greens. To better explain, take a look at a close up view of this groom's lapel. By the way I see this is lots of my images. They're shot on a 20D and 10D on L lenses. Just switched to shooting RAW so maybe it's JPG related, these images you see were shot JPG though.