Heat the oil in a large skillet over medium heat. Brown together the beef, green pepper, onion, and garlic until the meat is no longer pink and the vegetables have softened, about 8 minutes. Drain liquid from pan.
Stir in tomatoes, tomato sauce, rice, salt, basil, oregano, and the cayenne, white, and black pepper (adding more pepper to taste, if desired). Spread mixture into an ungreased 9x12-inch baking pan. Top with cabbage and Colby cheese.
Cover and bake in preheated oven for 65 to 75 minutes, or until the rice is tender.