webSafeColorsBuilder.add((red << 16) + (green << 8) + blue);
        }
      }
    }
    ImmutableList<Integer> webSafeColors = webSafeColorsBuilder.build();
    assertEquals(216, webSafeColors.size());
    Integer[] webSafeColorArray = webSafeColors.toArray(new Integer[webSafeColors.size()]);
    assertEquals(0x000000, (int) webSafeColorArray[0]);
    assertEquals(0x000033, (int) webSafeColorArray[1]);