Imagine nails that capture the essence and vibrancy of a bustling metropolis. Think of skyscrapers, busy streets, and a night sky that's illuminated by countless city lights. Create a dynamic skyline silhouette on one nail, while others shimmer with metallics resembling urban architecture. Add a touch of graffiti art for a modern, urban twist. The design should embody the rhythm and energy of city life, representing both its structure and spontaneity.