Some say the Admin account defaulted to a chessboard.
I think it's true, but not sure if I'm just falling victim to false memories... help?
There's no way my memory of this is reliable anymore, but I also remember my administrator account being chess pieces (and my user account being an orange fish).
It might be that the randomization code was bypassed in some cases - like creating an account in safe boot mode or similar.
It makes sense. The chess piece is the first profile picture in the list.
The account named "Administrator" that Windows created for you always had the chess piece.