That's a great question! It really depends on the specific public space and its design goals, but a few colors dominate the landscape these days.
For general waste, you'll most often see dark green, black, or dark gray. These are the true workhorses. The reason is practical: they are excellent at hiding scuffs, dirt, and stains, which helps the area look cleaner for longer. Dark green, in particular, has a classic, almost subconscious association with public services and blends naturally into park settings.
However, there's a strong and growing trend toward stainless steel (silver). Its sleek, modern appearance is favored in urban plazas, downtown areas, and more architecturally designed spaces. While it shows fingerprints and smudges more easily, its professional look and durability make it a popular choice for cities wanting a contemporary aesthetic.
For recycling streams, color-coding is key. Bright blue is almost universally adopted for mixed recyclables like paper and plastic. Green bins are frequently dedicated to glass or organic waste, while yellow might be used for specific materials like plastic bottles. This system uses high-visibility colors to make sorting intuitive for the public.
So, while dark, practical colors still lead for general trash, the palette has expanded. The most popular choice ultimately balances low maintenance, visual appeal, and clear communication to encourage proper public use.