I am always partial to green and thought about getting mine painted before it get's built up. I was looking at commando green, but I really like that outback color.
That grey would be very unique though.
Have you gotten quotes?? I am very interested in what it costs to paint one of these behemoths. I'll probably just end up staying white, which is never a bad choice in the desert where I dwell.
Here's a cool app to help find paint colors. Just pick something then you can adjust later. I find one I like then google search the color and check out pics of the vehicles. Ford Avalanche grey is pretty sweet.