Lobster and Confetti Vegetable Salad

3 tablespoons seasoned rice vinegar

2 1/2 tablespoons fresh orange juice

1 1/2 tablespoons olive oil

1 1/2 tablespoons chopped fresh tarragon or 1 1/2 teaspoons dried

1 large shallot , minced

1 teaspoon (packed) grated orange peel

1 large yellow bell pepper

1 large red bell pepper

2 8-to-

10 ounce uncooked lobster tails (thawed, if frozen)

12 ounces small green bean s, trimmed

1 large white-skinned potato , cut into 1/2-inch pieces

1 large ear fresh corn

10 cups mixed baby greens (about 5 ounces)