Design a captivating collection of watercolor clipart elements showcasing fairytale ponies in a whimsical and illustrative style. Paint each pony separately, featuring vibrant and imaginative designs, such as a pony with a rainbow-colored mane and tail, a pony adorned with intricate floral patterns, a pony with wings inspired by butterfly wings, and a pony with a starry night sky coat. Utilize a vibrant color palette, incorporating bold and contrasting colors to enhance the magical and fantastic