Edit in JSFiddle

<article>
  <p class="black-as-hell">
  This text is black
  </p>
  <p>
  This text is pink
  </p>
  <p>
  This text is green
  </p>
</article>

article p.black-as-hell {
  color: black;
}

article p {
  color: pink;
}

article *:last-child {
  color: green;
}