Christopher Boone is a 15 year old kid with autism, he is the main character of the book “The Curious Incident of the Dog in the Nighttime”. He really likes Sherlock Holmes book and when his neighbor’s dog is killed with a pitchfork he is compelled to write this book. One of his quarks is he has associated different colors with different meanings, for instance he likes a color red and it means he will have a good day as he states in the book, “In the bus on the way to school next morning we passed 4 red cars in a row, which meant that it was a Good Day.” (Haddon 24).

There are also other combinations like 5 red cars in a row means a super good day. Christopher however does not like yellow he will not eat anything yellow and if he sees 4 yellow cars in a row it means he will have a black day, “4 yellow cars in a row made it a Black Day” (Haddon 24), this in which he will not talk to anyone at school and he doesn’t eat lunch. It is pretty obvious that he also dislike likes black as it refers to him having a bad day. The last color he talks about during the book is brown which he also dislikes because when he is having breakfast he talks about how if he ate shreddies and drank tea he would be shaky and thing about lemonade and coco pops which are colors he dislikes. “I start thinking about Coco Pops and lemonade and Dr.Pepper…. And even writing this makes me feel shaky and scared” (Haddon 19).