Create a picturesque coloring page showcasing Zócalo Square, a lively and bustling central gathering place that encapsulates the heart of community socialization. The main focus of the page should be a medium greyscale, using varying shades to provide depth and dimension while keeping the intricacy accessible for all skill levels. Begin by laying out the square, ensuring it takes center stage, framed by iconic buildings and architectural elements that characterize the location. These surrounding structures should be drawn with simple lines, highlighting key features without excessive detail. Provide gentle shading to give a three-dimensional feel to the facades. In the heart of the square, depict people engaging in various activities such as conversing, laughing, playing, or walking their pets. The figures should be outlined with delicate line art, capturing the essence of movement and interaction without over-complicating the shapes. Clothing and accessories can be sketched with minimalistic patterns to allow for creative coloring. Trees, benches, lamps, and other street furniture should be sprinkled throughout the scene to add layers and interest, but again, drawn with a simplistic approach to maintain the overall theme of the page. These elements will serve as additional areas for coloring enthusiasts to explore and personalize. Lastly, to help guide the coloring process, use a subtle gradation of greyscale in certain areas, like shadows or reflections, to indicate where darker or lighter shades might be applied. The final composition should feel inviting and open, encouraging users to bring this dynamic social hub to life through their choice of colors and techniques --ar 17:22 --s 50