I drank a revamped purple smoothie with a higher berry-to-beet ratio and it was delicious.
I will give you the recipe for what I did this time, and then I will offer all sorts of alternative ingredients. Since this is a salad not a delicate cake, all ingredient measurements are an estimate. This version of the recipe makes 3-4 servings. Add more, add less, omit...you do you, inspired by me.