and they did

From the Corporate Rebranding challenge. See all 804 entries (closed)
(, Mon 14 Jun 2004, 0:02, archived)
then revert to a white image, you get a negative.
(, Mon 14 Jun 2004, 0:03, archived)
"turtle" on the bbc micro, if I'm not mistaken (although I am quite drunk)
edit: and woo!
(, Mon 14 Jun 2004, 0:06, archived)
though my brain may have confused the two with age
(, Mon 14 Jun 2004, 0:07, archived)