It turns out that the difference between a normal coloring book and an adult coloring book is simply the complexity of the designs that need filling in. This adult coloring book by Peter Deligdisch raises the level of complexity from beginner to expert with masterful and sprawling designs.
Coloring books were huge time sinks when we were children for good reason. They allowed us to be creative, while also having fun, seeing cool designs and our favorite characters, waiting to be colored in. Well, who's to say that adults can't also enjoy the fine art of coloring?
The concentration needed for these images is much higher as the images themselves are extremely meticulous and the areas that need filling in are quite small. If you're up to the challenge though, this can be a great pastime and an amazingly fun piece of interactive art.