We are all different. we all have our own struggles. perhaps you could focus on how our differences make us the unique person we are.
Oliver Onion is a good book~ talks about being different ,wanting to be just like everyone else, and coming to terms with the fact that you are different.
A porcupine named Fluffy is another good one. ...there's also a book about an elephant that's all different colors~can't remember the name of that one though.
.....as far as making sure his needs don't get overlooked, well that's something you'll have to keep on top of. consistently reassure him that he is just as important as your other child ( i'm sure you already do this)