This salad is a great make-ahead, since, unlike many tossed salads, it keeps for up to 3 days in the refrigerator. Serve with roasted meats, or top with leftover cooked sliced chicken for a hearty lunch salad. Substitute navel oranges for the blood oranges if you prefer; just be sure to use 2 tablespoons of lemon juice with the sweeter navel orange juice in the dressing.