The headlight is two parts: the headlight and the small corner triangle.
The triangle can be replaced in clear for about $40-60.
The actually headlight (which also has amber) must be completely replaced to eliminate the amber (about $900+ a set used). You can either replace that entire part with clear halogens, or lit.'s.
Some people have also, used black spray tint, and various other methods to cover the amber without replacing their headlights.