Place popcorn in large mixing bowl.

In saucepan over medium heat, melt marshmallows, butter and salt, stirring occasionally, until smooth. Remove from heat; stir in food coloring and peppermint extract.

Toss marshmallow mixture with popcorn; cool 2-3 minutes, or until cool enough to handle. Toss with chocolate candies.

Shape 3 tablespoons of popcorn mixture into small cluster; repeat with remaining popcorn mixture. Place on wax paper-lined baking sheet; cool completely.