The great thing about paint is that... it can be stripped and repainted again, and again... So yeah, Ed took a little artistic license. You know what I interpreted it as? AGING. It's not clean and spit polish shiny any more; it's a museum relic starship. The lines are visible. To show contempt for Ed doing this is just... well, is such out of whack perspective. If Ed didn't take up the charge, the ship would've been consigned to some non-paid volunteer who probably would have done a hack job on it. "Golly gee Elmer, lookee here, I done fixed up th' Enterprise--Star Track ENTERPRISE!!"