i was just woundering about the black bumpers on the sl1/sw1. what is the best way to make these look good?? should i shine them with liek a wet tire treatment or just keep them dull?? i think they look prety good shined up but i was woundering whats the best product for this?? i have used the tire shine before but it wears off quickly.. and if i use wax will it make white marks on the bumpers?? or even make them shine?? or is there a product made for this?? any tips or opinions accepted/ apreciated.. thnx