Tangy Wheat Berry Salad

2 C cooked wheat berries
1/2 C finely diced small red onion
1/4 C + 2 T extra virgin olive oil
1/4 C balsamic or rice wine vinegar
3 scallions, minced using both white and green parts
1/2 bell pepper, any color
1 medium carrot, diced
Salt and pepper to taste
1/4 C cilantro, optional

Mix all and refrigerate at least two hours before serving.