I fully encourage you to read Sexy Mermaid Jonah and other biblical coloring book disasters posted on pitch.com.
Alan Scherstuhl writes:
As a former Sunday school boy, your Crap Archivist can assure you that the raw and horrifying stories of the Old Testament — say, Abraham prepping his son-gutting knife — are best introduced to children via the medium of felt on flannel board.
Coloring books are easier, though. But unlike felt, which is cheerfully abstract, the thickly inked pages of a coloring book demand detail that is often beyond the capabilities of the artists.
That means that during the story of Joseph five year-olds might get distracted with questions like, “Where’s that other camel’s head?”