title: How to convert array content to uppercase?
body: <p>Is there a non backwards way to turn exactly one array index into an uppercase string?
  I don't want to split, loop or anything else, because I only need this one string.</p>
  
  <pre><code>colors = [ "red", "green", "blue" ];
  red = colors[0];
  redUpper = red.toUppercase();
  </code></pre>
  
  <p>This won't work, because <code>toUppercase()</code> is a string function. I know that. I'm only looking for the simplest way to achieve this.</p>