Hi! Vintage Trailer Supply,
www.vintagetrailersupply.com, has replacement folding doors that would fit in my '64 Tradewind. I believe the cost is around $124.99
. You can pick the color of wood to match your interior. Also, I believe Camping World has a replacement door which may be an off-white-ish yellowish color. I haven't seen them in person, only online. Good luck!