Autism pen puzzle colors

[Monty]

I was under the impression that the colors for the autism puzzle pen were light blue, dark blue, yellow and red with a single black piece representing the missing piece.
I received the autism puzzle kit I ordered today, but the colored pieces I received are 4 blue, 4 green, 4 red and 4 yellow and 4 black. Did the colors change?

 

[kronewi]

You are absolutely correct on the colors.

 

[navycop]

http://www.penturners.org/forum/f13/autism-puzzle-pen-43379/index2.html
It might come with so many pieces to cover all the sides.