I was painting the structure this weekend. I started with a base coat of grey, then followed that with a sponge texture of blacks and greys. Still have several more walls to paint and then its time for the details.
Just got my T-shirt too for friends helping out. It glows in the dark.
I get exhausted looking at a post like this but at the same time what a kick! Your mind must be going a thousand miles an hour with all the addons and possibilities after the structure is up. If I did something like this my brain would be fried at some point and I would have to lock myself up in one of those cells you created and become the very creature I intended to show.