"Pink or Black" is a song by kz, of livetune, featuring Hatsune Miku. It was released in 2013 alongside a music video featuring the anime franchise "Six Hearts Princess" by Takashi Murakami. The song and video were released on the YouTube channel of makeup company Shu Uemura, and served as an advertisement for their Six Hearts Princess collection. This song was released by livetune under the label Toy's Factory as a single on November 6, 2013. It was later featured in the album DECORATOR EP.