From Berean Research:
Evidently adult coloring books are all the rage so many professing Christians have taken to coloring. Why’s this a problem? Because it involves way more than the sort of coloring children do. Adult coloring can involve meditation — and it’s not biblical meditation.
“Meditative coloring,” explains Jessica Pickowicz “is the practice of coloring specific patterns while emptying the mind, allowing thoughts to roam free, and achieving spiritual enlightenment.” She warns that some coloring books can take participants into the world of the occult which is not a safe place for the Christian (or anyone else) to roam.
The Bible says that Satan masquerades as an angel of light. (2 Cor. 11:14) So, has the wily serpent made his imprint on the pages coloring books? Pickowicz thinks so. She writes: