I’ve found out a bit more about this bush posted last Sunday, November 8.
The hardy plant is a bougainvillea.
As far as I can find out, these bougainvillea only go this vivid red colour when they are stressed.
South Australia is currently going through the first November heat wave on record which might have a bearing.
Thought this plant was a bougainvillea, unbelievable that it can survive and flower in such a place.