That's an excellent and very practical question! Sun fading is a major headache for public works departments and property managers. After all, a faded, worn-looking bin doesn't exactly encourage civic pride or proper use. Based on durability and performance, I'd primarily recommend two material categories.
First, high-density polyethylene (HDPE) plastic that's been formulated with UV stabilizers. Don't just go for any plastic bin—look for ones specifically marketed as "UV-resistant" or "sun-proof." These have additives mixed into the resin during manufacturing that act like sunscreen, absorbing and dissipating UV radiation before it can break down the pigments. They are lightweight, rust-proof, and often made from recycled content. The color is molded throughout the entire thickness of the material, so even minor surface scratches won't reveal a different color underneath.
Second, consider powder-coated or painted metals, like stainless steel or galvanized steel. Here, the metal itself won't fade, but the coating can. The key is a high-quality, industrial-grade powder coating applied over a properly prepared surface. This creates a hard, durable finish that is far more resistant to chipping, scratching, and UV damage than standard paint. Anodized aluminum is another superb option for a metallic look, as the color is electrochemically bonded to the metal surface, making it extremely durable against fading.
A quick tip: Regardless of material, darker colors like forest green, charcoal gray, or black tend to resist visible fading better than bright reds or blues, as they already absorb more light. For the longest-lasting color in brutal, all-day sun, UV-stabilized HDPE is often the most cost-effective and worry-free champion. Be sure to check the manufacturer's warranty for specific claims about color retention.