clear white lights spring to mind.they were a band of belgium enthusiasts that tailor made them.
they were very expensive and that was 7 years ago(when i had my ibiza)
http://www.seatcupra.net/forums/showthread.php?t=6517&highlight=bwl
http://www.seatcupra.net/forums/showthread.php?t=1054&highlight=bwl
All the links are dead now though