Zach cannot learn his color names. He is not color blind. He can match colors. He can sort colors. He has been doing this (matching and sorting colors) since he was 18 months.
If you were to ask Zach to touch the yellow crayon he would have no idea which one to touch. However, if you were to put out a series of cards in front of Zach that had color names and ask him to touch the yellow one, he could do it. We have been struggling to get Zach to learn his color names.
We have asked some experts for help on this. Much of the advice has not been helpful. Here is where we are now.