The tradition of throwing beads at Mardi Gras comes from the pre-Lenten Renaissance festival custom of tossing items into the air to celebrate the upcoming fasting season. When Mardi Gras parades began in the 1830s, they featured a King of Carnival named Rex. At first, Rex tossed the spectators sugar-coated almonds. Glass-bead necklaces replaced the almonds, which the crowds loved. Fierce competition to hoard the most beads ensued. Modern celebrations use safe and affordable plastic beads in traditional green, gold, and purple hues.