"So "Indigo" is just a 'colorful' way of saying conceited. Got it."
No, you apparently don't. And I doubt you ever will.
Being an indigo isn't about thinking you're better than anyone. It's more about UNDERSTANDING your own self. I doubt most indigos would even care if they were the 'second coming of human evolution'. But I do wish my parents had known about this when I was a child then maybe I would have had it much easier. After I found out about indigos it was like CLICK! all of a sudden everything just made perfect sense. You must have had experiences like that before?