I've heard some and read about indigo, star and crystal people.

Why exactly are they called like that?
Isn't everyone has some or all characteristics suitable to be called by one of these names?

I also heard that nowadays there are more of advanced people are born.
But is it true?

I used to try just for the sake of interest to see into which category some people I know will fall, including myself, but ended up seeing that I for example and by description would fall under all of them, only considering age advised - perhaps 'indigo' would suit better.

Then again doesn't it just have to do with our character and views on life?
Is it not just a modern way of making ourselves feel more special then others?

I heard some say: I have a crystal or a star child, someone told me that, but I don't know why. It sounds good, so I choose to believe it.

Can someone please explain to me how true all this is?