Brown is a color so often treated as almost a non-color, but also indisposably subtle and communicative. Brown is a color we can never quite forget because, even if we don't realize it, it can conjure deeply reflective moods. It is also the color of the soil (at least in much of the world), and can be symbolic of closeness to the earth and to nature (a role it shares with Green Tropes). Brown is also the most common human eye color on earth, and in many parts of the world is the only indigenous eye color. Brown is also the second most common human hair color, after black. Also, the majority of the World's inhabitants are a shade of brown. And perhaps most delightfully, brown is the color of chocolate. However, there are certain other, less positive connotations.