I'm wondering if this inversion thing is more to do with creating your Bryce scene normally, rendering in normal light and then creating a negative image in say PS or PSP.

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...