read this:

http://www.rms.nsw.gov.au/registrati...vsi29_rev1.pdf

specifically...

Tinted headlight covers must not be used if they cause the headlights or direction
indicators to emit a colour other than that allowed by the Regulation.

headlights must show only white light, and when on at night, illuminate the road ahead of
the vehicle for at least:
– 25 metres on low-beam
– 50 metres on high-beam.

so as long as they can still illuminate the road for 25m and do not affect the colour you should be alright.