Eigengrau [ʔaɪ̯gŋ̍ˌgʁaʊ̯]

In his Eigengrau series Hans Tammen explores overtones and noises that are emerging from pianos, guitars and other stringed instruments affected by vibrations from transducers. Eigengrau is the color you see when you close your eyes, which is due to the perception of an ever-changing field of tiny black and white dots seen in the phenomenon.