primary colors

Last week I taught Tyler some colors. The next morning when I asked him to show Daddy suddenly Tyler had amnesia. This morning (after several days without quizzing him) I asked him to point to a red dinosaur and he did. Then I asked him to point to a yellow dinosaur and he did. I asked him to point to a blue one and, yep, he did. When I moved on to green I lost him. So he's got the fundamental three that are used to make all other colors. How fitting for an artist's son.