Prepare candy scrolls 1 day in advance. Melt white Candy Melts candy according to package directions. Tint melted candy teal.
Use melted teal candy and cut decorating bag to pipe scrolls onto parchment-covered board. Pipe about 14 scrolls for each treat in sizes from 2 in. to 3 in. high x 1 in. wide, alternating right and left designs. Make extras to allow for breakage. Chill until firm, about 5 to 10 minutes.
Make cupcakes. Prepare cupcake batter following recipe directions. Bake and cool cupcakes.
Prepare buttercream icing following recipe directions. Use spatula and icing to ice cupcakes smooth.
Assemble cupcakes. Use spatula to carefully lift scrolls from parchment paper. Insert scrolls in cupcakes.