A Kelvin AEC Routemaster bus was painted in a gold livery to advertise the ticket .
A Kelvin AEC Routemaster bus was remained in the livery until withdrawal by Kelvin Central in 1991 .
A Kelvin AEC Routemaster bus was painted in a gold livery to advertise the ticket , and remained in the livery until withdrawal by Kelvin Central in 1991 .