@koji - desert themed marines is a good un, and nicely applicable to red scorps, too. You dont need to use the official colour scheme, in fact, i think your idea is better.
I just now typed up a bunch of paint recipes for deserty brown, but then I actually looked at the marines tenorikuma linked to. Yah. Just do what he did. Looks good
incidentally, my advice when you want to match a paint colour is to just buy the paint. Saves time and effort, and if youre doing an army (which you are) itll save you heaps of headaches down the line when you want to add a new squad and cant quite recall the colour mixes you used 6 months ago. VMC do a huge range of military type colours (theyre for military modellers) so that's where I would look. The website tenorikuma linked to lists the paints used at the bottom. (Maelstrom Games: free worldwide shipping if you spend over a tenner. That's where I get all my paint from.)
ps - do you have any sternguard/vanguard veterany types that I could maybe snag? Or did badruck hold on to a few? I aint gonna be heartbroken if I dont get em, as theyd just be going into the vast pit of despair that is my "to-do" box.
