ATTENTION! Before you buy this coloring book and you will give a hasty rate - take notice that this is not a classic lineart coloring book (look at the preview) but rather a grayscale and more realistic coloring book than classic line art coloring books. Grayscale scale can give shading effect without the need for shading! Depending on the darkness on a grayscale image, one color can be colored over the entire area, and shades of gray under it form different types of subtle variations that provide a depth that is very difficult to achieve on a traditional coloring page.