Hard coloring pages are for adults, who like the challenge of coloring something that requires more concentration and planning as you color. More and more adults are now realizing the benefits of coloring books so don’t be surprised if you are on the train or plain and you see some adult coloring pages. Adults don’t like to color pages that are made for kids so that is why there are so many coloring books for adults. These books present a challenge for adults, In Australia the coloring books are on the bestseller list. So if you are looking to challenge yourself with something little harder then you have come to the right place because here we have collected Hard Coloring Pages for you.