"Design a playful and festive cover page for a Halloween coloring book for kids. At the top, include the bold heading 'Halloween Coloring Book' in fun, bubbly lettering. Below the title, place a large, cheerful 'Happy Halloween' signboard, decorated with pumpkins, candy, and a friendly bat hanging from the corner. Surround the sign with smiling Halloween characters like a cute ghost, a grinning pumpkin, and a tiny witch flying on a broom. Add stars, a crescent moon, and swirling leaves in the background for a fun, spooky vibe. At the bottom, include a name label with a cute border for kids to write their name. The overall design should be bold and lively, with easy-to-color outlines."