+1 on the aluminum vinyl wrap. I saw an example at the Philly auto show this year, and was amazed how well it looked.
That would be a much cheaper option, and as stated, easily reversible.
This stuff is even "somewhat" gasoline resistant these days, in that if you get a few drops on the tank during a fill-up (as we all do occasionally....right?), a simple wipe-up and soapy water or even spit should be okay.