title: Greasmonkey change <span> color
body: <p>I want to manipulate a single color from a forum's userlist.
  The User is displayed like this:</p>
  
  <pre><code>&lt;span style="color:#1381A5"&gt;username&lt;/span&gt;
  </code></pre>
  
  <p>My latest shot is this one:</p>
  
  <pre><code>var spans = document.getElementsByTagName("span");
  for(var i = spans.length - 1; i &gt;= 0; i--) {
      if(spans[i].style.color == "#1381A5") {
          var span = spans[i];
          span.style.color ='red';
      }
  }
  </code></pre>
  
  <p>Do you have some hints how to pic&amp;replace the color value ? 
  Thanks in advance.</p>