Replacing side lights

I am going to be replacing the side light bulbs on my 2007 cooper s within the next week as one of the bulbs has gone. My question is I am wanting to replace with LED's that match the xenon headlights, is it ok to put any LED's in or do they need resistors built in etc? Also any ideas on what kelvin rating the standard xenons are and have you got a link to an exact match?

Thanks

Nick