The Used's "Blue And Yellow" stands as a defining track from their 2007 album *Berth*, capturing the band's evolution into a more mature, atmospheric sound. Released during a pivotal era for the group, the song blends their signature post-hardcore intensity with melodic sensibilities that would characterize much of their later discography. The recording features the band's signature layered guitars and emotive vocals, reflecting themes of emotional turbulence and introspection common in their work from the mid-2000s. As a key component of *Berth*, the track exemplifies the band's ability to shift between aggressive dynamics and hauntingly beautiful choruses, solidifying their reputation as a band capable of delivering both visceral energy and lyrical depth within the emo and post-hardcore genres.