Cook spaghetti as directed on package; drain. Rinse in cold water; drain and cool. Dice green pepper, tomato and cucumber into rather small pieces. (Also pepperoni & ripe olives, if using).
In large bowl, combine spaghetti, diced vegetables and 3/4 bottle of salad dressing, or to your taste. Add 1/2 to 3/4 bottle of Salad Supreme or to taste. Mix well. Refrigerate at least 3 hours before serving.