Thanks Gary, Mike.
The Mosaic is the same 4 frame STL11k data set as was somewhat infamously and incorrectly colour profiled recently in AS&T (also a big thumbs up to Greg B at AS&T for re-printing it in the current issue)
It seems to me that if you get good star colour variation (whites, blues , yellows.....but no greens!) the rest of the colours fall into place. I have to say I'm pretty happy with the result...
