I don't know too much either lol I was hoping someone here with the knowledge could help me out.
It looked almost patchy like every scale was slightly different colour, like mottled. It didn't have a different coloured head.
Sorry for the poor quality it was just in a hurry because everything else I had seen that day did a Mad dash for the scrub so it was just a quick phone out the window on the move lol.
It was actually an awesome day for spotting but not so good for pics, everyone was warmed up from the temperature that day. I saw heaps of bobbies, heaps of western blueys and even some goanas. ( don't know the names and don't have pics sorry, bit of a dummy when it comes to naming reptiles.)
Cheers