Melt butter and marshmallows, stirring until smooth.
In a large bowl, mix cereal, candy corn and miniature chips. Add orange food coloring to marshmallow mixture. Add marshmallow mixture to cereal mixture, stirring quickly to combine. Spread on large buttered jellyroll pan with buttered hands. While warm, press candy pumpkins into mixture spaced about 2 inches apart, if desired. Cut into squares.
