IME, most of my Aussie fade in color, or at least change when they are in my tank. I would love f/u pictures of these in weeks to come.
I got a bunch of frags and none keep the original color.
I think Aussie corals get much better care in holding and shipment than wild coral from other Pacific originations but like any other wild corals, they will likely change once/if they adapt to our tank conditions.