Color Rush (Korean: 컬러 러쉬; RR: Keolleo reoswi; MR: K'ŏllŏ rŏshwi) is a South Korean mystery romance web series starring Yoo Jun and Hyun Jun. Based on the eponymous Boys' love novel; it tells the story of Yeon Woo, played by Yoo, who can only see the world in varying tones of gray and Yoo Han, played by Hur, with whom Yeon Woo experiences a "color rush" – suddenly being able to see colour. It premiered in South Korea on Seezn, Wavve, Naver Series on and Skylife VOD and outside South Korea on Viki, Viu and Line TV on December 30, 2020, and concluded on January 21, 2021. On October 28, 2021, it was confirmed for a second season.