You can also use the spary on window tint used by rc car guys. It works great on lexan and other polycarbonates. It is fuel resistant and with a little care given to prep, looks great. Before applying wash with mild soap and water solution. The brand that I have always used is Pactra. Make sure you get the one for lexan bodies not plastic models like the one sold by testors.
PS. Spray on after canopy is painted and apply to the inside of canopy.