Hi everyone, thank you very much for your comments.
I always struggle with star colour, however, I see others with the same chip who can get good star colour. Sometimes I wonder if my scope has anything to do with it, or if I just screw it up.
Anyway, I have tried a repro, which didn't go all to plan, but it does look in many ways a lot better than the original.
http://tinyurl.com/7cy379d
Thanks for looking, hope you all have a great day!!