We don't eat cakes, pretty much any desserts in the house. But if I were making a chocolate cake for my father, I'd use chocolate frosting because that's how he likes it.
I did make William's birthday cake, chocolate cake with vanilla frosting, but that was only so I could use food coloring to decorate his cake! After he blew the candles out, sadly the cake went into the microwave where it sat until trash day later that week!