Picture Day Drama

Today is picture day at school, and after struggling with a 20 month old Zoe who suddenly decided she had fashion opinions, I had to get Zack changed into a more appropriate shirt since he dressed himself. He asked me to help him put on his white shoes which he rarely wears, which I did, curiously. Then I said I was going to put on striped colored shirt on him, and he threw a fit saying he didn't want to wear that shirt, he wanted to keep on the tshirt he was wearing. I couldn't understand his strong reaction until he said that his current shirt has white on it, and the shirt I was giving him didn't have any white.
"Why do you need white on your shirt, Zack?"
"Because it is pitcture day and they are taking black and white pictures." he replied.