Like what Car54 said... plastidip them. Search it on this forum. It is good stuff and if you do not like it, then you can take it off.
Also take a look at dipyourcar.com
2010 E93 M3 / AA Catless X-Pipe / AA Catback / AA Pulley / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / AFE Stage 2 / Velos Designwerks Tune