Lol, no this is not a trick question. Of course! Everyone makes mistakes. The real question should be: Do painters that make mistakes admit to them and fix it? Just recently, for the first time in my painting career, I painted the wrong colors on the interior walls of a condo. There were 2 colors that were being used to compliment and accent each other and I got it backwards. The homeowners and I were corresponding by email since this is a vacation/rental home of theirs.