Pigmented refers to something that has color due to the presence of pigments. Pigments are substances that give color when mixed with a base or carrier material, and they can be natural or synthetic. In biology, pigmentation refers to the coloring of an organism's skin, fur, feathers, scales, or other physical attributes due to the presence of pigments in their cells. So, when something is described as "pigmented," it means that it has a colored appearance because of the presence of pigments within its structure.