Rainbows

Last night we were discussing Gavin's school work. He brings home worksheets that he has completed and they are covered in strips of crayon colors. They are fully covered, often with a few blocks of color in the wide strips. I wandered what his teacher thought.
Me: Gav, what does your teacher think about you coloring your work?
Gavin: She likes it.
Me: These are beautiful. Where do you get the idea's for your artwork?
Gavin: I have rainbows in my head.