lol. My DH said to share with you the story of when we were staying with a friend in auckland.
One night there was a Knock at the door so my DH went downstairs to answer it. There was this nice looking young man in a suit

. He explained the product he was selling was a citrus cleaning product and went through a list of things it could remove, one being vivid. My DH being the type of person that he is told this young man he would buy his product if it passed one test.
He whipped upstairs and grabbed a vivid

(lol we were all now eves dropping) and asked the guy if he beleived in his product to draw a smiley face on his suit pants and then remove it with said product. The guy drew a smiley face then sprayed on product. LOL the smiley face did not fade, salesman's face dropped. DH thanked him for demo and closed door in Face. TaDa