NOTE: Cook Time, Servings and Nutrition Facts may vary depending on the box mix used
Preheat the oven to the temperature specified on the cake mix box.
Line a cupcake pan with decorative cupcake baking cups.
Add the orange extract with the other ingredients.
Using a mixer, cream the butter on medium-high speed until fluffy (1-2 minutes).
Add the cream cheese, lime zest, vanilla and salt; continue to mix on medium-high until combined and smooth.
Add 1 cup of sugar and beat on low speed (increase speed after the sugar is incorportated) into frosting, followed by 1 tablespoon of the lime juice.
Repeat, alternating the sugar and lime juice, for the remainder of the sugar and lime juice, finishing with the 1/2 cup of sugar.
Frost cupcakes when they are completely cool. NOTE: Frosting can be covered and placed in the refrigerator while the cupcakes cool or to stiffen before frosting if desired.