box-shadow-currentcolor.xht == reference/box-shadow-currentcolor-ref.xht color-stop-currentcolor.xht == reference/color-stop-currentcolor-ref.xht text-shadow-currentcolor.xht == reference/text-shadow-currentcolor-ref.xht will-change-stacking-context-opacity-1.xht == reference/green-square-100-by-100-ref.xht