Preheat the oven to 250 degrees. Line a couple baking sheets with parchment, set aside.
In the bowl of a stand mixer, combine the egg whites and the cream of tartar. Mix on medium speed for about a minute or until bubbly and frothy looking.
Slowly add in the sugar, about a tablespoon or so at at time, allowing it to mix on medium speed for about 30 seconds to a minute between each addition. Do not rush it. Continue to mix until all the sugar is incorporated and the eggs are whipped to stiff peaks - about 10 minutes.
Add in the pumpkin flavoring and orange food color - only use gel or powder food coloring as liquid will change the consistency of the batter.
Mix until incorporated, scraping the sides often.
Transfer the meringue to a piping bag fitted with a large star tip.
Pipe a large mounds of meringue on the parchment paper, about the size of a ping pong ball or so.
Bake in the preheated oven for one hour. Do not open the door, but turn off the heat and leave the meringues in the oven for an additional hour as the oven cools gradually.