In the end, coloring is soothing. There are so many proofs and studies on that. When something soothes you, it cannot be harmful. So, this must be a good reason to seize this as an opportunity to make your crew at the company both positive, cheerful and stress-free or encouraged to cope with their work.
My youngest child enjoys saying that the care bears must be a million years old, the same age as me. As I stare at him I do not laugh because he made a funny statement but because I imagine the day when he is sitting at the table with his child and they make the same joke to him.
There may be many fun games for kids over internet but coloring pages from Disney story books have no substitute. They can be provided by school teachers as a fun activity too. But you also need to award your child when he is done with the coloring. Kids need appreciation and it can be done by encouraging them through rewards.