Generate a group of four stylish, trendy female K-pop idols. They should have distinct personalities and styles like a real K-pop group. Include modern and glamorous makeup, fashionable outfits (mix of edgy and elegant styles like leather, denim, and vibrant accessories). Each idol should have a unique hairstyle and different hair colors, including long straight black, wavy brown, silver blonde, short bob with bangs, and pastel pink hair. Make them look youthful, confident, and ready for a music video photoshoot, with vibrant, dynamic lighting and bold expressions. The background should be sleek, with soft colors or studio lighting similar to a high-end fashion shoot.