You can "color" all the pages in varying shades of gray

The Existential Coloring Book is packed to the gills with animal-people paired with dark quotes from philosophers and other people worried about the essential dark unknowability of the universe. Also, activities! From an existential connect-the-dots to a page where you can draw what Kierkegaard is thinking about, you'll be sighing with joy as you work on them. This looks like a coloring book for kids, but it's probably not a good idea to give it to one. This twenty-four page, 8" x 10-1/4" book is a great gift for philosophy majors or anyone else overwhelmed with a feeling of hopelessness. Features quotes from existential thinkers, mysterious pictures to color and mildly depressing activities.