This person is creating a beautiful and intricate mandala design on a coloring page. They are carefully selecting different colors of markers to fill in the complex geometric design, ensuring each shape and detail is filled in perfectly. With intense concentration, the person is slowly bringing the mandala to life with cleverly chosen colors. To create an eye-catching design, I would recommend using a palette of bright, vibrant colors to really make the mandala pop. Using shades of pink, orange, green and blue would look stunning as the person slowly completes their art. Alternatively, shades of purple and yellow could be used to add a dreamy, ethereal look to the mandala. No matter the color scheme, this mandala promises to be a beautiful and mesmerizing piece of art when finished.