Well, here is another cool little find on ebay. Now, if you need these this is gold. OK, green gold. But here is the rub. You will need the seats to go with them, and from what it looks like, its just the cushions. And in that is the issue. Because the seats will have the same patina as the cushions. So? What do you do?
Under the seats is OK to change, but those seat backs will define everything. Maybe the seller is doing his seats and maybe you can ask for the seatbacks to be carefully removed. Either way, you know we have a thing for original anything, and why this is for sale is a little beyond me.