America West Heritage Livery.
America West was founded in 1981 and headquartered in Tempe Arizona with its main hub at Phoenix Sky Harbour. In the mid-2000's it absorbed US Airways keeping callsign 'cactus', the US Airways brand, and repainted its fleet to the white on top, blue bottomed US Airways livery. In 2013, US Airways merged with American, officially retiring the 'cactus' callsign.
This livery, known as the heritage livery (see photo), worn exclusively by N838AW, an A319, showcases the lineage and heritage of American Airlines.
Currently, there is no A319 in-game so this isn't 'true to life', but I have done my best to make it as accurate as can.
Feedback is always welcome and I hope you enjoy it!