hi have just bought a vectra 2.2 elite and leather seat has scuffs,trying to order repair kit but they dont colour code match.they have emailed me to say they do in light grey ,black and dark grey,i have found code for my leather in handbook which is xxnn but dont know what colour it is as difficult when looking at seats to tell if black or dark grey.does anyone know what colour it is for the xxnn code or do i need to ring vauxhall. thanks