the outer lenses are "through coloured" when you see one smashed, so you wont be able to rub down the colouring off them.
and if you've seen a set of standard lights with the outer lenses removed, you would probably agree that they are extremely ugly mothers underneath and you wont want it on show!
moral of the story is dont spoil your nice arse by monkeying with the standard lights! IMHO the best look for mk2 is red tint the standard ones or get tinted lexarses. trouble is with red tinting the standard ones is they look so old fashioned these days, the lexarses with a tint bring the mk2 rear into the 21st century.