Heat gas or charcoal grill. In 1-gallon resealable food-storage plastic bag, mix marinade ingredients until well blended. Add shrimp; toss to coat. Cover; refrigerate 20 minutes to marinate, turning once. Meanwhile, in medium bowl, place bell peppers and onion; spray with cooking spray. Place vegetables in grill basket (grill "wok"). Wrap tortillas in foil; set aside.