isn't she supposed to have blue aura for her magic? (just like Rarity's)I mean, Twilight's magic aura is purple.. And when I first say Shining Armor (Twilight's brother), I thought that his magic aura would be blue, because the colour of his mane.. but his magic aura was purple too, because he was Twilight's brother.So I'm just saying, if Sweetie Belle is Rarity's little sister, they should have same magic aura colour