title: Change color of tabletools buttons in DT library in R
body: <p>Instead of grey change to a custom color</p>
  
  <p>For example this:</p>
  
  <pre><code>library(DT)
  iris2 = head(iris, 20)
  # only show the Copy and Print buttons
  datatable(
    iris2,
    extensions = 'Buttons', options = list(
      dom = 'Bfrtip',
      buttons = c('copy', 'print')
    )
  )
  </code></pre>
  
  <p>Gives us the following:</p>
  
  <p><a href="https://i.stack.imgur.com/kDUeb.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kDUeb.jpg" alt="enter image description here"></a></p>
  
  <p>What i would like is to change the color of the  buttons Copy and Print.</p>
  
  <p>I have gone through <a href="https://datatables.net/extensions/buttons/examples/" rel="nofollow noreferrer">https://datatables.net/extensions/buttons/examples/</a>
  but i am not able to find a solution. </p>