Stone is not just gray. Water is not just blue. Metal is not simply yellow, silver, or black. This is one of the small surprises that makes world landmark coloring pages so enjoyable. A castle wall, a canal, a bridge railing, a dome, a fountain, and an old stone street may all appear in one illustration. When each part is colored with only one flat color, the page can look a little heavy or unfinished, even when you have taken your time. The good news is that you do not need advanced art skills to make these materi...