That's an excellent and observant question! For most modern urban trash bins you see in cities today, the colors are typically throughout the material, not just painted on the surface. They are usually made from plastic polymers like HDPE or polyethylene. During manufacturing, colored plastic granules are mixed and then injection-molded or rotationally-molded to form the entire bin. This means the color is integral, so it won't chip, peel, or fade like paint would. This method is chosen for durability and low maintenance in public spaces. However, some older or very specialized bins might use a high-quality, durable paint or powder coating for specific logos or details, but the main body color is almost always molded in. So next time you see a bright green or blue public bin, you're seeing the actual color of the plastic itself!
Are the colors on these urban trash bins painted on or are they throughout the material?
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