Color. This was the first Zentangle that I ever used color on. I even used my markers to create the shading. I didn’t do another full color Zentangle until this year, because I really didn’t like the way this came out, at the time. It just seemed too alien for a Zentangle. Now, I don’t mind color and actually enjoy it once in a while! Zentangle drawn on Official Zentangle tile using a black, Micron pen.