1. Put cooled rice in a large bowl; add the next 7 ingredients.
2. In another bowl, whisk the oil, vinegar, and soup mix together until well blended.
3. Pour half of the dressing over the rice and vegetables; stirring to coat the ingredients.
4. Cover the bowl tightly and refrigerate both the salad and remaining dressing at least 2 hours.
5. When ready to serve, add more dressing as needed.