title: How to change colors on barplot?
body: <p>I have bars that are all pink and want to know how to change them from light to dark of a color like from red to blue, white to red, etc.</p>
  
  <pre><code>    barplot(d1[1:25,]$freq, las = 2, names.arg = 
      stri_trans_totitle(d1[1:25,]$word),
      col = "pink", main ="Most Frequent Words \n in The Three Musketeers",
      ylab = "Word frequencies", ylim=c(0,2000)) 
  </code></pre>