Scholastic will publish a series by Colin Kaepernick, beginning with a picture story for next year.

According to a Thursday announcement by Scholastic Publishing and Kaepernick Publishing, the former NFL quarterback, “I Color Myself Differ” will be out in April. Kaepernick was a San Francisco 49ers player, but he hasn’t played in the NFL since 2016. He protested racial injustices and the treatment of Black people by the police, and knelt at games during the “Star Spangled Banner”.

Kaepernick (33), was adopted by a White family. His picture book is based upon a kindergarten memory where he first used a yellow crayon for drawing his family, and then a brown crayon for himself.

“This story is deeply personal and inspired by real life events. Kaepernick released a statement, “I hope it honors courage and bravery in young people around the world by encouraging them to live authentically and purposefully.”