What is coloured in?

Coloring-in is a fun and popular activity that involves filling in black and white illustrations with colors using various materials, such as pencils, markers, and paint. It is enjoyed by people of all ages, including children, teenagers, and adults, and is often used as a way to unwind and relieve stress. Coloring-in is also believed to have therapeutic benefits, including improved focus, relaxation, and mindfulness. Many coloring-in books and resources are available on a variety of subjects, ranging from nature and animals to mandalas and abstract designs.