Since red is the color of blood, it has historically been associated with sacrifice, danger, and courage. Modern surveys in the United States and Europe show red is also the color most commonly associated with heat, activity, passion, sexuality, anger, love and joy. (Eva Heller, Psychologie de la couleur – effets et symboliques. pp. 39–63.)
The Temple of Bacchus at Baalbek, Lebanon, ca. 150 AD. This stunning Roman temple, still very well preserved, is actually larger than the Parthenon of Athens.