Orange may be the most popular color of pumpkins during the fall season, but you'll more than likely spot a variety of colored gourds on doorsteps in the fall. And yes, they all have a meaning behind them. Good Housekeeping breaks it down:

Stacker compiled a list of ways that Halloween has changed over the last 100 years, from how we celebrate it on the day to the costumes we wear trick-or-treating. We’ve included events, inventions, and trends that changed the ways that Halloween was celebrated over time. Many of these traditions were phased out over time. But just like fake blood in a carpet, every bit of Halloween’s history left an impression we can see traces of today.