The last time I attempted to make red velvet cupcakes, they were not great. I had used someone elses recipe, but mine turned out rather greasy. So I went to my usual baking recipie sorce . . Martha.
Recipe for the cupcakes and frosting can be found here.
They turned out OK. Just not red. The insides actually were a dark mauve. My mistake had been using red gel decorating paste. (The recipe called for "1/2 teaspoon red gel-paste food color") The color still looked off once I added it. So I tried to also add drops of red food coloring. Unfortunately, I didn't add enough. Ahh well.
Tasted yummy though!