Yes I took the whole light assembly off and put it in an baking owen
Set it to 150°c and left them in there for about 10minutes...Pretty scary..haha.
Then I took them out, wearing pottholders of course and pryed the lens off. Its really easy after you heat it becouse the sealer becomes gooie and loose
After that I took the chrome thingy out of the lense. There are three screws that hold it. Sanded it a little bit and painted it black.
Put the light and lense in the owen again for about 5 minutes and put it back together..
Here is a DIY guide that might help
http://www.jlevisw.com/Bake.pdf