You might have to wait until they're in stock (which could be a long wait at MM).
Or take a photo to a custom wheel place and they can machine and paint/powdercoat them for you. They might have something in stock that looks the same, or have the Tech5 design on file already. I was looking at a set of those in black once I get through the stock tyres in a year or two.
I found this place as an example but there are others in Aus.