Create a captivating coloring book page for adults with a steampunk art style. Craft a scene featuring the enigmatic "Black Sun." The image should be outlined with thick, bold lines, lending it a crisp and clear appearance. Imagine a world where gears, cogs, and intricate machinery intertwine seamlessly with the natural elements. In the foreground, depict an elaborate mechanical structure resembling a colossal sun dial, its gears adorned with ornate Victorian designs. Radiating from the center of this magnificent contraption, curving beams of delicate clockwork stretch outwards like sunrays. Amidst this mesmerizing clockwork landscape, position the centerpiece - the mysterious Black Sun. This celestial marvel, an intricate combination of celestial and mechanical elements, appears as a mesmerizing eclipse. Its corona consists of interlocking gears and celestial bodies, while the core reveals a mesmerizing arrangement of gears resembling a complex mechanism. In the background, a cityscape of towering steampunk skyscrapers with intricate clock faces and steam-powered dirigibles soaring among the clouds sets the scene. As a coloring page, this design offers the opportunity for artistic exploration, with the choice of intricate linework and shading allowing for a truly captivating and imaginative coloring experience.