"And I thought there were only 5 of them in the world, somewhere in Appalachia."
You're probably thinking of the Blue People of Kentucky, who have a real medical condition called methemoglobinemia.
http://www.people.virginia.edu/~rjh9u/fugate.html
As far as the "Indigo children" are concerned, that's strictly Coast To Coast material (oh, and there are "Crystal children", too!):
http://www.coasttocoastam.com/search_results.html?query=Indigo
Well, it's easy to get Blue people and Indigo people mixed up. (Yes, those are the people I meant in my disingenuous comment.)
Crystals are the children of Indigos, according to something I saw in your second link before I ADD'ed it out of there.
The crystals have autism, rather then ADHD. "They don't speak because they need no words to communicate."
I love the way they define these ... "a type of child" ... I bet they go on and on about not "labeling people" right after that.