You can change the fabric on your Zip-Dee to any Sunbrella fabric that you like. It's sort of a pain because they rivet the fabric to the roller tube, but anyone with an Airstream should be well versed in the use of a rivet gun
Pick out a fabric and call Zip-Dee They are nice folks and will make you a new replacement that will be a perfect fit.
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries