Hi AVB,
Yes. I think something red. After I read your post, I did a bit of research and found this:
"The Australian Institute of Petroleum (AIP) advises that petrol manufacturing and importing member companies are currently in the process of changing the industry controlled standard colour (dye) of unleaded petrol (i.e. 91 Research Octane Number grade) from Purple/Bronze to Red/Orange".
(
http://www.aip.com.au/resources/colour-australian-unleaded-petrol-changing-redorange)
This happened in 2012. This would be the likely culprit for my pink oil.
