Not my sticker (I never flew from EDI to IAD), I picked this picture on the internet, with the only purpose to show what was meant by "green stripes". I never bothered to edit the picture, which had, obviously, been edited previously. I have no idea who was the original poster, and why (s)he changed LAX (probably) to LAD. I agree it
may have been silly, but we don't really know what the purpose of the "perpetrator" was. I also don't know what the purpose of your post was, but I do understand that 1) people have lots of time to kill at the times of the current pandemic, and 2) you'll have to learn how to read the stickers: LAD (or LAX) would be the final destination, the origin of the flight is
never shown on the sticker (the flight is).