I don't know, I thought the same at first after seeing them in the showroom or in drab wet weather, but when we went to sign for our car there was a red one parked out in the full sun. And it almost looked a little metallic.
I found it too "maroon" for my liking though.
Meanwhile I'm glad our orange is the flat one, it's exactly what we wanted. Having ordered based off early UK reviews, I was very worried when they started advertising the "golden bronze" looking car on the website. That was definitely not what we wanted.
Another plus: the orange of NSW custom number plates almost perfectly matches.
I was just glad for some brighter options after all the other EV brands seem to have decided we don't like colour in Australia.