So, why did the statue turn green in the first place? Well, it's because of a chemical reaction between the copper and the air and water around it. It's kind of like when you leave a slice of apple out on the counter and it starts to turn brown - it's the same idea! The copper reacted with the oxygen and sulfur in the air, creating a layer of verdigris that gave the statue its green color.
This process happened over the course of about 20 years, and it was actually a bit of a surprise to the people who built the statue. They had expected it to stay a nice, shiny copper color, but instead it developed this unique green patina that's become so iconic. And the best part is, it's still changing to this day - the statue is constantly reacting to its environment, which means it'll keep evolving and looking more beautiful with age.
