"Masterpiece" - Children's Literature Introducing Kids and Young Adults to the Arts

I just finished reading a children's story about art, a little boy, an artistic beetle and a art heist! It's called "Masterpiece" written by Elise Broach.  The story is ultimately about friendship and courage but it is also a great way to introduce children to the arts.  I don't want to tell too many details and spoil the plot, suffice to say that I really enjoyed it!