Jak zmienić kolor w elemencie HTML

<style>
  h1 { color: red; }
</style>
<body>
  <!-- 1) Using CSS from internal style-->
  <h2>Title with RED color</h2>
  <!-- 2) Using inline style (try to avoid this) -->
  <h2 style="color: orange;">Title with ORANGE color</h2>
KostasX