Camo Paint?

I'm planning on painting my pop-up in a 3 or 4 color camo scheme. It's now a hideous wierd faded pink color now that I can only guess was popular in 1967 and that's got to go. The camper itself is made of aluminum so no rust issues.

Anyone have any tips or tricks in regards to doing camo paint? This is pretty much the pattern I'd like to end up with: