Thanks Ross!
I have since reprocessed the whole stack, and managed not to lose the colors in the process.
Here's a new version:
http://www.flickr.com/photos/siovene...n/photostream/
Yeah, I guess that one in the corner is PGC 59984:
http://simbad.u-strasbg.fr/simbad/si...=SIMBAD+search