Make Vanilla boxed cake mix per instructions on the box
Cool cupcakes completely before decorating.
Work 15-20 drops of green GEL food coloring into marshmallow fondant.
Break green marshmallow fondant into 13 small pieces. Set one piece aside for use on the warts.
Form each of the 12 pieces into a ball, then flatten sides to make a sort of square with rounded corners.
Push one of the corners of your square into the other, forming a lopsided triangle.
Round-over the frog’s bottom a little and your body is complete.
On this side where you have made the lopsided triangle, bend that portion down and curve it over to form a face.
With your fingernail or a butter knife, make depressions on each side to resemble legs and feet.
Repeat the use of your fingernail and butter knife to make a depression in each lower face for a smile.
Press 2 candy eyeballs on the upper side of each side of the frog’s head.
Work an additional 5-10 drops of green food coloring into the remaining 13th piece of marshmallow fondant.
Break off tiny bits and roll into balls, then place 2-3 onto the back of each frog and pat flat.
Place frogs into the refrigerator until you’re ready for them.
With your largest decorating tip, press into the top of the cupcake off-center, creating a well. Save hole tops.
Place 1 tablespoon of the mixed-color sprinkle pearls inside the well in the cupcake.
Replace the hole top on each cupcake.
Divide ¼ of the frosting into a separate bowl.
Mix 4-5 drops of neon green food coloring into this small portion of your vanilla frosting, stirring until the color is consistent.
With the remaining frosting, mix 5-10 drops of green food coloring, stirring until the color is consistent.
Place star tip in a piping bag.
Smear the neon green frosting around all edges of the piping bag.
Fill the piping bag with the green frosting.
Frost each cupcake in a swirl, turning the piping bag as you pipe.
Place a frog on the side of each cupcake.