In a small bowl, combine the butter, corn syrup, extract and salt. Gradually stir in confectioners' sugar. Knead by hand for 1-2 minutes or until mixture becomes pliable.
For each color of dough, combine 1 tablespoon of dough and food coloring; knead until blended. Leave remaining dough white. Roll white dough into a log; remove one-fourth of the log and set aside.
For the snowmen's bodies, divide the remaining log into 8-9 pieces and roll into balls. For the snowmen's heads, divide the reserved dough into 8-9 pieces and roll into balls. Stack 1 smaller ball on top of each larger ball.
Use the colored dough to form hats, scarves and earmuffs as desired. Use candies to make eyes, noses and buttons.