It was all to do with the Wagstaff/Brian Griffin idea that they hatched at Lynn in 2000, when as well as the matching Wolfsport two piece race suits all the bikes had matching silver covers. Griffin then disappeared during the 2001 season from memory and Waggy struggled on to the end of 2002 before moving the whole operation to Cowley, mainly to do with the corporate hospitality opportunities at a greyhound stadium IIRC. The silver machine nickname and bike covers went with him, was obviously an image he liked.