title: How to color (fill) barplot with ggplot
body: <p>looks like easy to solve (i'm beginner using R), i've tried <code>scale_fill_manual</code>, but for some reason doesn't work. </p>
  
  <p>here's the code:</p>
  
  <pre><code>st&lt;-ggplot(df2, aes(x=ES, y=Count.of.ID))
      st+geom_bar(stat = "identity",  na.rm=TRUE, colour = "black") +
  scale_fill_manual(values = c("blue", "red", "yellow", "green")) + 
  coord_flip() + 
  theme_classic() + 
  facet_grid(ES.Types~., scales = "free", space = "free") 
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/Z6uCx.jpg" alt="enter image description here"></p>
  
  <p>i want to color the bars related to:</p>
  
  <ul>
  <li>"cultural" in Red </li>
  <li>"P" in Yellow </li>
  <li>"Regulating" in Green </li>
  <li>"Supply" in Blue</li>
  </ul>
  
  <p>Thx in advance</p>