Why is red the colour most associated with Santa Clause/St Nick.?
St Nicholas was a bishop in Medieval Turkey and his robes were red per tradition. Since then, he has been depicted in whatever clothing is common for that area. In Scandanavia for example, he’s depicted wearing brown/green robes with fur trim. A different area portrays him in different clothing of a different color. Then the Coca Cola marketing team decided to take all the credit for the red color even though it was around since the beginning.