All that vinyl on Ebay will cost more to ship than its worth! Check out your local fabric store or better yet, check with your local upholstery/trim shop. You will need to use a steamer or heat gun in order to mold the vinyl to contours and you will need to use a contact cement to adhere it to your panels. DO NOT use 3M spray cans from the hardware store such as 74, 77 or 90! These glues will release when they are exposed to high heat (car parked outside on a hot day). Use DAP high strenght adhesive or landau top adhesive. You can probably find DAP at a hardware store, if not your local upholstery supplier will have it. You can use a brush to apply this adhesive, but the best way is to use a sprayer and air compressor.
If your panels are still in good condition you can use a vinyl dye to change the color. This is an inexpensive and easier way to change the color. The dye applies like spray paint and you can probably get it from the same upholstery shop or upholstery supplier. The main difference between dying and painting is that the yinyl dye is flexible and will not flake off like paint.