As promised, here is the sample spread of the Incredible Epic of Dr. "Doc" Gil Gamesh. I've included the black and white line art, and a coloured and lettered mockup. This was a very unusual way of working for me--a real departure from my graphite/paint/collage work on Threshold. Lots of fun.
I'm posting both the b+w and colour images, so you can see the process.
He has also posted about this image at his blog, which features art for his graphic novel, Threshold. Check it out, it's great stuff.