One thing that still bugs me about my UK MacBook is that the keyboard isn't a standard UK keyboard. I've remapped the keys to the standard UK layout, but now I need to alter the markings on the keytops so they match. Anybody got any ideas on how to remove the old markings & permanently apply new ones? I'm not overly worried about it looking good (one glance at my MacBook with it's grimy keys/wristwrests, duct tape & stickers tells you I'm not bothered about image!) but I don't want the markings to wear off after a couple hours typing (as I expect Sharpie would).