Thanks for the replies - now, there's a real mystery in this pic (at least, it's mysterious to me!). I lit the tree with a few spherical lights (which were supposed to be visible objects, but ah, well) - none of which were blue - they were either red, gold or green - and yet I've got a huge blueness in the reflected light - an inexplicable blueness, I feel. Anyone know why? Not that I'm complaining - this is now my Official Christmas Card - which I've been printing all afternoon - but I still don't understand why it does what it does... Oh, and thanks very much, Eric - I'm a fan of yours, too!