Just one?
You can buy treated nylon in olive, winter or desert cammo.
Here are examples from Seattle Fabrics.
http://www.seattlefabrics.com/Pack%20Cloth%20Colors.htmhttp://www.seattlefabrics.com/Super%20K%20Kote%20Ripstop%20Colors.htmIt seems I only get one link in a reply, so here is their home page.
http://www.seattlefabrics.com/default.htmWho knows, you might find that the cost of shipping the fabric is worth it.
But if you check you should be able to find suppliers closer to you.
At least East Coast instead of West Coast.
Maybe it would be good to give a fabric and sewing store near you a call.
Keep in mind that a couple of cans of Krylon spray paint will camoflage almost anything.
Edit. I will second Sherpadog's recommendation of MEC. I bought a great lightweight tarp from them 2 years ago. Very light, 9'8"x12'8", fits in a 12"x8" stuff sack, not camo but close enough (kind of a mustardy olive colour)
Edit again!
I just realized the tarp he showed is the same stuff as the one that I have.
My only complaint is that it sounds a bit crinkly in the cold weather.
It is a very lightweight tarp to carry though, only 1 pound 6 ounces including the stuff sack.