I'll just leave this here as food for thought...
http://986forum.com/forums/general-discussions/51810-our-amber-headlights-can-de-ambered.html
Edit to add: post 104 is how my original amber halogen headlights now look with GT Projectors and de-ambered. Total cost with stuff I had to buy (which you may have, i.e. a Dremel) was well under $600 total. Probably closer to $500. Just takes a few days off and on if you move slow like me.