You can download yellow, red, and green bell peppers individually from my food brush collection, or use this tri-color bell pepper brush for your food art.
Please check out my other food brush in my profile: Bok choy, tofu, baby corn, broccoli, chickpea, button mushroom, asparagus, and more. I also have a roast/toast color gradient you can use as blending mode for your food. Enjoy!