Cook pasta according to package directions; drain. Rinse with cold water; drain again.
In a large bowl combine pasta, shrimp, celery, onion, sweet pepper, and olives. Stir in tomato wedges. Pour Citrus Vinaigrette over pasta mixture and toss gently to coat. Cover and chill for 2 to 24 hours. Stir before serving. Makes 10 to 12 servings.
In a screw-top jar combine grapefruit juice, salad oil, honey, thyme, salt, and pepper. Cover and shake well to mix.