They mentioned it in the Qualifying highlights show on saturday. Given where they are at, I'd go for no paint!
Of course thats how the silver arrows became known as the silver arrows. No paint to save weight!
The Naked Arrows maybe?
Of interest, Autosport have got hold of the FOM payments for 2014. Unsurprisingly, Ferrari make the most money despite coming fourth as they receive more money than the team winning the championship just for competing, although not quite sure why Red Bull make more money than Mclaren as a baseline?