Good question.. it must be the lighting or something, or an interim livery. Sorry I can't contribute any info of value, but I am joined in your curiousity!
Steve
Militant Agnostic - I don't know and you don't either.
Quite probably is VH-EBU. She came out of the shop after her life extension upgrades on 09 Feb - this pic was taken a couple of weeks after that.
Cheers.