Just saw this stuff ( a superhydrophobic spray-on coating). The web site link has the description and a short video on it showing how the stuff that they want to sell works. They are talking a spray can, but also say they have a paint. It sure looks like it has possibilities!

Link - http://news.cnet.com/8301-17938_105-57323425-1/this-superhydrophobic-coating-is-truly-stunning/

Greg