Vodka & Ginger ale.
"Aurora" is all-day-cocktail that is sweet and tastes like lemonade.
You had better to be careful of the quantity of lime. Put it as a taste is tightened.

As for the name "aurora" , it came from image of this cocktail.
I think that you can serve it deliciously even if violet is changed into the liqueur like Midori or Dita that is sweet, because it is a back-style fundamentally.