The Renaissance Masters is filled with 25 historic paintings by 10 of the greatest painters of the era digitally restored and then grayscaled for you to color at home. Included in this book: Bottocelli, daVinci, Raphael, Michelangelo and more. **This book does contain some artistic nudity and violence but I do not feel that it warrants an adult rating given the context of classical art. I leave it up to you dear colorists to use your own discretion. *This is a grayscale coloring book. This means that some shading has already been done. Coloring over this shading creates more depth of color for the finished pages. This is not the same style as traditional line art type coloring books and does use different techniques. There are many tutorial videos on YouTube describing these techniques. **The authors that publish through CreateSpace have no control over the paper quality or shipping. Please take this into consideration when leaving reviews. Thank you.