Azure admired the beauty Gaea had provided Earth with, which has bursted lift into Olympus. Every single thing nature had given them to cherish and survive. During creation, her mother, Iris played a role that the Gods almost saw was the most foolish gift for man. To see the delicacy of their surroundings and a different variety of hues. A way to express their emotions in pigments and a more brighter life style.
Color.
Iris's history wasn't so great as she had contributed in the war of Olympians against Titans. Since Iris' and her sisters birth, they were born to be enemies, fought against her sister: Arke. Azure had Arke's iridescent wings of stained glass and colors given by Iris, which had oftenly reminded Iris of her sister.