Toby, Thanks for your help as well.

Jim - Brilliant!!
I've been clicking around for ages with absolutely no success - your suggestion has solved the problem. Is there a way of applying these settings to all the scenes, or do I have to set each scene individually??

Is it possible to fix colours irrespective of the camera angle. I'm trying to colour a floor in different colours but when i change the viewpoint the hues change. Can I stop this happening??