This is a traditional type Red Velvet Cake that contains chocolate. If you've never had this cake it can look strange because of the color but it's red due to the food coloring and also because the chemical reaction between the vinegar and buttermilk turns the cocoa a reddish brown. You can frost this any way you want. Traditionally cream cheese frosting is used, but there are plenty of versions that call for pecan or pecan/coconut frosting. Be sure to use cake flour for the best texture.