Located behind the goals , they are full color , with scope for still and moving images . They were first used in the 5-2 Carling Cup victory over Barnet F.C. in August 2007 . Located behind the goals , they are full color , with scope for still and moving images and were first utilised in the 5 â `` 2 Carling Cup victory over Barnet F.C. in August 2007 .