Thanks Frank, Akira, Tom, Mongo and Golunvolo. As a matter of fact, the picture was slightly cropped, and that was the only positive action. I used the standard Adobe color profile (more intense reds) instead of the camera one, that would make the picture look even more greenish, but that was no action, since the imports from OM-D are parametered that way. I have yet to find a better, custom profile for that camera.