Dave: good point about white & snow. I'm betting there weren't a lot of snowy days in the Australian study!
As an aside, do you remember if your lights were on?
An Ontario (including snowy driving) study lists white as tied with blue in 4th place for most crashes, with black leading (again) followed by grey (2nd) and red (3rd). But it's just raw figures and isn't weighted by vehicle colour as a proportion of the sample.