Place carrots in a microwave-safe dish; cover with plastic wrap. Microwave at high 4 minutes or until crisp-tender; cool.
Place zucchini in a microwave-safe dish; cover with plastic wrap. Microwave at high 1 1/2 minutes or until crisp-tender; cool.
Combine the sliced carrot, zucchini pieces, sliced onion, and bell pepper pieces in a large bowl. Combine the vinegar and the remaining ingredients in a small bowl, stirring with a whisk. Pour the vinegar mixture over the vegetables, tossing to coat. Cover the vegetables, and marinate in refrigerator for 2 hours.