The red was inspired by the red sandstone walls of the Agra Fort in Agra, India [ah-gruh]. The Agra Fort was built in the 1500s and was used as the residence for the emperors of the Mughal dynasty until 1638. Now a UNESCO world heritage site, this is considered the sister monument to the Taj Mahal. The Agra Fort comprises of beautiful architecture such as the Jahangir Palace, the Khas Mahal, Diwan-I-Khas, and two beautiful mosques. Agra is a classic bold red, perfectly opaque in just one coat.