Indeed they are...deadly that is.
Polyurethane paint is, IMHO, the best there is, and of these, the first successful one, DuPont Imron still leads the pack.
Toughest paint known to man.
As for painting airliners, the finest paint shop in North America is Dean Baldwin...Florida and New Mexico. We should know, have had several aircraft painted there.
Superb work...but not cheap.
You get what you pay for...and aircraft painting is no exception.