Here's the deal:
According to the Food Allergy Research and Education website, the Teal Pumpkin Project "raises awareness of food allergies and promotes inclusion of all trick-or-treaters throughout the Halloween season."
To participate, simply "provide non-food treats for trick-or-treaters and paint a pumpkin teal to place in front of your home...to indicate you have non-food treats available."
Here are 17 beautiful teal pumpkins to give you some ideas.