Got black ones on the missus FR+, no chrome surrounds for the lights (there are two types of black ones). As said the lights arent as good, but Seat lights are shite anyway, my Altea is also crap! Getting HID's for the Leon it as I type!
Got to remove the bumper to remove the lights, I've got a two post lift in garage at home so it was a good bit easier, still took best part of two hours though (1st time 'round).
Ultra seem to be the common make (is there another make?), word of warning, I had to return the 1st set I had as the passenger side light would completely steam up (& look shite), this obviously meant removal of the bumper, etc, AGAIN. I bought the lights of ebay from 'Waxacar' for £145 inclusive but they didn't want to know when I contacted them about the condensation
problem so I had Ultra's number and dealt direct, they were really good & sent me another pair of lights so I didn't have to remove the 1st lot, then refit the standard lights, then refit the 2nd lot (ie I only had to do one switch over) - this is when I found out about the black lights with the chrome ring (1st lot) & the totally black lights (2nd lot). To make sure I didn't have any condensation problems again, I put extra sealer (clear) around the light where the clear cover goes over the body & left them in the airing cupboard for a week to make sure they were dry. 6 months later & no problems. The angel eye sidelights aren't that bright even with LED's in them, but I think they look good on the car, black lights, black car. As Andy says, other combinations perhaps don't lend themselves so well. Hope I havent exhausted or bored anyone!!!!!