title: Do I need to generate a css file from Pygments for my jekyll blog, to enable colorful code snippet?
body: <p>This is my first time to use Jekyll and Pygments. But I don't know how to insert colorful code snippet.</p>
  
  <p>I successfully installed Pygments, following the official steps, with the markdown like this:</p>
  
  <pre><code>{% highlight ruby %}
  def foo
    puts 'foo'
  end
  {% endhighlight %}
  </code></pre>
  
  <p>I see the html source code including the  classes, however there is no color for the this snippet. </p>
  
  <p>Do I need to generate some css files from Pygments and include them? And how?</p>