it is a yellow line most of the time
The Investigators Inside the Yellow Line - 2004 TV was released on: USA: 22 January 2004
on tv, the line of scrimmage is usually blue and the first down line is usually yellow.
The yellow one
September 1998 was when ESPN first introduced it in a pro football broadcast.
The blue, yellow and red (on fourth down) lines are added by computers that scan for certain colours (i.e. the green of the gridiron), then replace the necessary pixels with the required colour. The final image is then televised. Note that these lines are not visible on the field itself to spectators, coaches, etc., and there are sometimes difficulties with adding the colours (for example, snow or mud discolour the ground so the computer does not recognise it as such, or a uniform is almost the same colour as the ground). In these situations a technician can normally fill the gaps manually.
it might have been a phone book for the yellow pages. I do remember that commercial tho.
Yellow
Football Cafe - 2004 - TV was released on: USA: 2004
United States Football League on television was created in 1983.
Fishing is really boring on TV. Football is awesome!!!!!
Georgia Tech Yellow Jackets football was created in 1892.