Prince William Reveals Princess Kate's Secret Hobby: Coloring

William spoke to an author of a coloring book for adults.

“I’m working on a new book just now and it’s set in a castle, funnily enough, so I will definitely try to remember everything,” Basford told reporters after the ceremony. “I’m sure little snippets of today will feature in the book.”

William awarded Basford the Order of the British Empire for services to art and entrepreneurship.

“I think people are just craving a digital detox,” Basford said of the appeal of adult coloring, or “color therapy” as it is sometimes called.

Kate, 34, received her degree in art history with honors from St. Andrews, where she and William met and fell in love. She is a big supporter of the arts and has made arts education and art therapy for struggling children one of the cornerstones of her charitable work.

Kate is also patron of the National Portrait Gallery.

The princess met last week with a group of children at London's Natural History Museum. Kate joined the children as they decorated "dinosaur" eggs.

William on Wednesday also revealed another of Prince George’s fascinations -- planes and trains. William was visiting Derby, where he tried his hand at conducting a train.

William later remarked how Prince George would "love it" and would be excited about seeing his father drive a train.