Prepare the millet ahead of time and store in the refrigerator until ready to use.
In a small jar mix together the balsamic vinegar, maple syrup and orange juice. Set aside.
In a large salad bowl, line the bowl with the red leaf lettuce.
Arrange the green, red, yellow pepper, mushrooms, onion, celery, carrot, and cucumber in any way you wish in the lined bowl. Top with radish.
Top the salad with vinegar orange juice mixture. Serve. Mix the ingredients together before eating.