More like the Princess of Lightning Bolts and Mountains, which in Magic: the Gathering is the color of chaos.
If Starlight became an alicorn at the same time and Pinkie defeats Discord, what would happen? Has anyone drawn a picture showing this catastrophe? Would the entire world start singing the Smile song randomly? Would there be so much cake in Equestria that Celestia would no longer be able to move? Would they become the next Celestia and Luna due to unforeseen popular demand and uprisings from all the chaos and mind control?
Would Pinkie update her party cannon into a party railgun? Would Gummy become Gumzilla? Would the Moon be the Sun and the Sun be the Moon? Would aliens start attacking Equestria? Would they randomly find out how to manifest hydrogen bombs into reality by using boxes of lead pencils and paperclips?