Would this make a huge difference on efficiency? And would passenger care or airline care the way it looks? I don't see a significant difference on the these two, or would the silver unpainted body affect the way consumer look at this airline/its identity? because the logo and title are still there, everything is still there, and the only thing apart is the paint....
so if this is a $ saving, cost cutting way, why don't airlines do this on every single aircraft they own? and this is not just one or a few aircraft, but the total saving on the entire fleet