title: How to make column labels on R barplot italic
body: <p>This is probably a simple question, but how do I make just the column labels on a barchart italic, not the <code>x-axis</code> label, but the column labels specifically.
  The code I have so far is</p>
  
  <pre><code>bp = barplot(means, names.arg = c("CON", "TRI"), ylim=c(0,120), ylab="PA", xlab="M")
  </code></pre>