I bought some yellow 3000k helogen bulbs off eBay, love them, they are legal according to QLD Legislation, THEY ARE NOT HID, HID ARE ONLY LEGAL WITH A SELF LEVELING SYSTEM AND HEADLIGHT WASHER SYSTEM, Or in this case fog light washer system.
not entirely sure if you can have HID for your fog light though but I'll see what it says.
you can go to your main roads website and find the vehicle standards legislation for your state.