I believe I sell an Natural and Green Rollup board that may be what your looking for either on my web site or Ebay. http://www.legendproducts.com
What happened to buff?

Chesshouse can custom make a mousepad or vinyl chessboard in whatever color you want as long as you give them the color # .

Okay KineticPawn I will look into that option at chess house.

I have a couple of these and they seem like buff off white to me.
Notationless Regulation Vinyl Tournament Chessboard | House Of Staunton
I also have a couple of these folding PVC board that have even more of an off white buff color.
PVC Tournament Chessboard | House Of Staunton
They are out there. I just think that they took the word Buff out from the description.
There are a lot more options in portable board material like silicon and thin mouse pad than there was ten years ago. The thin mouse pad boards are great and many are printed with fantastic colors like the ones from ACE and Chess House. However, none of these thin mouse pad pad boards have green and buff squares only white or off white. I also own an Olive Green Flex Pad board from chess house. It would look awesome if the light squares were buff colored.
Why did buff fade away?