Using this script you can change the favicon or icon of any webpage.
Using this script you can change the favicon or icon of any webpage as long as you change the @match to match the site URL. I have it set to youtube so no one who peeks at my computer can see all the youtube tabs floating around.
You can make it work on any site as long as the @match works.
You can also change the icon picture by simply changing the link at line 24 to any image you want.
