I don't know about Sydney, but Canberra has nil! That's why i wrote the guide. And if you do find a place that does it, it will be most likely a non-automovite shop, so you will need to take the headlights out! (medium difficuly)
Gracie, my only suggestion, to you would be go to a newsagent, and look through some of the car magazines, the magazines that are a bit ricey, and bling bling that sell/advertise lot's of parts, they sometimes even have special magazines with car accessories in em, Those magazines are the only places where I have personally come accross a special service that does that for cars!
That's the only suggestion i have
Good luck, and a Merry X Mas.