White tuna packs must meet certain color criteria when measured with a light meter. The term "white," however, does not mean that the tuna, when cooked, will be absolutely white, but only that it comes from the lightest in color of all tuna species. In fact, cooked albacore may vary in color from nearly white to light pink, beige or tan. Occasionally, it may also have a slight gray cast. The variation is attributed to fish size as well as time, place and manner of capture.