Patina is named for verdigris — the blue-green oxidation that forms on aged copper. It sits at the complex crossover of blue, green, and grey: more layered than a straightforward teal, more mineral than a garden green, more alive than a plain grey. The result is a colour with visual depth and history built into it. In natural light, it leans green; under warm artificial light, the blue-grey quality comes forward. It reads as though the colour has been somewhere, which is exactly what makes it interesting to live with.