I recently bought an upholstered chair for our bedroom and I could have it in any of about 40 fabrics, when we bought a new car there was at least 10 choices of interior fabrics/leather, so why do caravans generally only come in one or two fabrics for the season, unless you go for a handbuilt bespoke job of course, if there is a choice in home furnishings and a choice in cars why not caravans?