The original shades in our boats and those from CD and other retailers used to be made by a place called Odyssey Sails in Newport Beach, CA that also made sails for Potters. They just simply disappeared a few years ago, they used to be the only source for the trapezoidal pleated shades in the forepeak. Most retailers now offer shades from Ocean Products which are different but are good if their available sizes and colors work.
Maybe the factory has NOS or new supplier, I haven't thought to look and see what's on the new boats. Otherwise I'm gonna try the folks Don recommended next time.