Savoy Music Center in Eunice sold me a white strap (with a black leather inlay the center) -- it's very comfortable and looks awesome paired with my white Martin.
If you're looking for a different color -- other than black or white, the Gabbanelli store in Houston has some assorted suede colors. They're nice and thick -- obviously made for 3-rows, but I've got a red one I like a lot hooked to a red Falcon.
It's all about the Jacob for a ballin' box, my brutha!