Thanks all.
Yep, Mike, in fact the first process of RCW 33 pushing it to reveal the faint nebula revealed all white stars, so I had another go at it in Photoshop till I ended up with this version. I also dont use noise reduction software to much as any more than a slight noise reduction also seems to drain stars of their colour.
I reprocessed the Eta carina pic, more colour and contrast.
Scott