Yes, that carotene that gives flamingos their signature colour is set to be the new antioxidant addition to drinks.
Astaxanthin is a carotene, unlike beta or alpha carotene it does not have pro vitamin A properties, but it is a powerful antioxidant. It is synthesized by algae and travels up the food chain. Fish eat the algae, flamingos eat the fish etc.
According to the website Beverage Daily, the company Algatech is about to release a water soluble version that can be added to drinks.
They also report that the fishy taste has been taken care of. I would say that was definitely a prerequisite before adding it to drinks.