Mardi Gras is a Christian holiday celebrated in Louisiana before Lent that involves parades, balls, and eating. It began as a French tradition on the Mississippi River in New Orleans and has grown into a large festival celebrated around the world. During parades in Louisiana, beads, doubloons, and other throws are tossed from floats to crowds as the official colors of purple, gold, and green are displayed and King Cakes with plastic babies are shared.