I recently purchased a 500 Lounge Convertible. Nero black with a beige soft top. Since the tops on the Fiat are fabric and not vinyl, I was looking for a product that would be specifically for fabric soft tops. I found a product called Raggtopp. It comes in a kit that includes convertible top cleaner for fabric and vinyl tops and a fabric protectant developed exclusively for fabric tops. The process is simple. First vacuum the top thoroughly then completely wet it down. Apply the cleaner and scrub lightly with a soft brush. Hose off the top and finish washing the rest of the car. When the top is thoroughly try, spray a light coating of the fabric protectant and allow to dry completely. My soft top looks incredible and I highly recommend this product. Of the three tops that are offered, I would imagine that the beige will be the most difficult to care because it is so light in color. The protectant has UV protection in addition to helping to prevent staining.