a stainless steel film will be easy to keep clean and won't do much damge to the wall when removed. http://www.amazon.com/Instant-Appliance-Stick-Stainless-Steel/dp/B00BAUPS9M
John,
I must confess to never having seen that application.
I am not sure the finish would look good or even hold up over the long term. I would also be worried about the potential vapor retarder ... read more