ANN ARBOR, Mich. (CBS DETROIT) – Greg Martin Jr. began drawing on windows in the pediatric cancer unit at C.S. Mott Children’s Hospital in Ann Arbor when his son, Owen, requested he draw Bart Simpson on his window in June.

Little did they know, the 16-year-old’s request would soon transform the entire floor.

People took notice, and soon other patients were asking for him to draw on their windows, too.

He said sharing his art with others came naturally and lifted his spirits in a place where everything feels like it’s hanging in the balance.

“There was this one time this kid asked for a dinosaur, and we sat down and picked some stuff out together, and he wanted a real dinosaur, but he wanted it to be red and blue,” said Martin.

Source: Dad brings color, joy to cancer unit at Mott Children’s Hospital in Ann Arbor