+ 1 on the matthews paint,...just started a refurb on about 15 signs we painted 15 years ago for the local university here(Wake Forest). the paint is still good and its hard to get off with a razor scraper when we scrape the old hp vinyl lettering off,...often as not we just barely nick the top layer,..if the contract didn't call for a repaint we could get by being more careful scraping the vinyl off and just install new lettering after cleaning off the old paint,..go figure,...brown paint and that is in the hot sun with very little fading,...most paint would have chaulked and or faded to a dull pink or lt. tan by now