Rainbow text over black background.
During the 1980s, retail stores gave away promotional items with purchase including many pinback buttons. Unique, also known as Unique-Boutique, was a the large retail store in New York City that had multiple departments selling graffiti spray-painted clothing, vintage duds, and fashionable bright neon attire. Although Unique was effectively advertising during the 1980s, it went out of business in the early 1990s.
Witchipoo, M. (2012). The original swag – 1980s retail and promotional pins. WitchesBrewPress’s Blog. https://witchesbrewpress.org/2012/07/08/the-original-swag-1980s-retail-and-promotional-pins/