That's an excellent question that doesn't get enough attention! From my observations around cities and what maintenance crews have shared, the color durability varies significantly depending on several factors.
Most modern municipal trash bins use UV-stabilized plastics and powder-coated metals specifically designed to resist sun fading. The higher-quality bins can maintain their color for 5-7 years before showing noticeable fading, while cheaper alternatives might start looking washed out within just 2-3 years.
Darker colors like forest green, navy blue, and black typically hold up better than brighter shades. Reds and oranges tend to fade most noticeably because their pigment molecules break down faster under UV exposure. I've seen some bright red bins that turned pinkish within a couple of years in direct sunlight.
The specific material makes a huge difference too. High-density polyethylene with built-in UV inhibitors performs remarkably well, while standard plastics without protection deteriorate quickly. Some cities have started using vinyl wraps that can be replaced periodically, giving them more flexibility with color schemes.
Regular cleaning actually helps maintain color integrity since dirt and grime can accelerate color breakdown when combined with sun exposure. Municipalities that power-wash their bins quarterly tend to have better-looking street furniture year-round.
What's interesting is that some fading is inevitable, but the better manufacturers have made tremendous progress in color retention technology. The cost difference between fade-resistant and standard bins is often justified by their longer aesthetic lifespan.