Frost cake with remaining red frosting. In small bowl, mix 1/2 container frosting and brown food color. Frost sole of boot, heel and top of boot with brown frosting. With remaining frosting, pipe western design on boot (template can be found under the Tips below). Decorate with edible pearls. Unroll fruit snack; cut to look like leather strap for pulling on boot. Place strap at top center of boot. On sugared surface, roll gumdrops with rolling pin to flatten. Cut shapes for strap and spur; place on boot.