Combine cabbage, carrot, peppers, and green onion; toss. Combine oil, lemon juice, sugar, and salt; mix until sugar dissolves. Pour over vegetables; mix well. Cover and refrigerate at least 2 hours. Core and dice 1 pear, add to cabbage mixture and toss. Quarter and core remaining pear. Slice each quarter 5 times, leaving ½-inch of stem intact. Fan slices to garnish salad. Serve on individual serving plates or in serving bowls.