I've just done mine to black rings/badges... Easiest way is heat gun if you can get your hands on one, failing that a hair dryer will do. Some bug/tar remover (I used autoglym) to help and plenty of elbow grease to polish off the excess glue.
Nail varnish remover is also a great way to remove glue. Just ensure that you wipe up all the spills etc. A platic blade is also very useful; search Amazon/ebay. Would link but they don't always function correctly in these threads.
Oh and don't try to combine the hair dryer/heat gun and varnish remover methods (i'm sure you wouldn't!).