Create a set of high-quality PNG vegetable clipart images. Each illustration should showcase a different vegetable, such as carrots, broccoli, tomatoes, and peppers, in a clean and crisp style. The colors should be vibrant and true to nature, making the vegetables appear fresh and appealing. The clipart images should be versatile and suitable for use in educational materials, recipe cards, or any design project that celebrates healthy eating and nature's bounty.