Has is just faded, or is it warped / melted?!
If it's faded, then a rubber/vinyl based coating should restore it. There are various sprays here collectively known as "back to black" that do this; but not sure of their availability in Australia?
http://www.halfords.com/motoring/cleaning-products/detailing-products/simoniz-back-to-black-500ml
Failing this, I'd check to see if any breakers have the part - then unfortunately the stealers