There is a way to remove the INNER amber reflector from the newer clear headlights for a completely clear look, But it sounds like you have the earlier headlights were the amber is part of the lens itself. If this is correct, as others have mentioned, you cannot get rid of it without replacing the headlights.
http://www.renntech.org/forums/index.php?showtopic=178&hl=amberectomy
The above link has good DIY mod instructions as well as examples of both types (early & late) of headlights.
Threaded Mode
