   assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
    assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
    assert_equals(getComputedStyle(yellowSpan).color, "rgb(255, 255, 0)");
    document.adoptedStyleSheets = [];
  });
}, 'Constructed style sheets can be applied on document');

promise_test(() => {
  return Promise.all(createAllSheetsPromise()).then(values => {
    const greenStyleSheet = values[0];
    const redStyleSheet = values[1];
    const blueStyleSheet = value