Preheat oven to 225 degrees. Line a large baking sheet with parchment paper.
Place butter in a large pot over medium-low heat. Add corn syrup and sugar, stir until butter is melted. Increase the heat, bring mixture to a boil. Reduce the heat to keep mixture at a simmer, stirring constantly, for 3 minutes.
Remove pot from the heat, stir in Kool-Aid, baking soda, and food coloring if using, until well combined. Immediately add popcorn and stir until it’s all coated.
Spread popcorn out onto the prepared baking sheet. Bake for 40 minutes, stirring every 10 minutes. Add skittles as soon as the popcorn comes out of the oven. The heat from the popcorn mixture will help “glue” the skittles to the popcorn. Cool completely and then break into chunks.
Cook's Note: M&M's or peanuts would also make a great addition to your candied popcorn.
We want to thank Thrifty Northwest mom for the FREE Seahawk printable Popcorn Wrappers! Here's the link: http://www.thriftynorthwestmom.com/free-seahawks-printable-popcorn-cone-wrappers/