Pop a big batch of popcorn and divide into roughly even amounts based on how many colors of chocolate you’ll be using. Working one color at a time, melt chocolate and stir into popped corn. If using a microwave, heat chocolate in 10-15 second increments at 75% power and stir between heatings to avoid scorching.
In total, I used approximately 1 1/4 cups organic popcorn kernels, air-popped, and 1-1/2 lb. of Merckens chocolate (1/2 lb. per each of the three colors.)
This isn’t rocket science, though, so use however much chocolate and popcorn you like.