title: Shiny datatable: Format row depending on two conditions
body: <p>Currently I have this:</p>
  
  <pre><code>datatable(SignalDataFrame,selection = 'single', options=list(dom='ft')) %&gt;%
      #datatable(ResultDF, options=list(dom='ft')) %&gt;%
        formatStyle(
          '200d MA',
          backgroundColor = styleInterval(0, c('#e6b8b7', '#d8e4bc'))
        ) %&gt;%
        formatStyle(
          '50v200d MA',
          backgroundColor = styleInterval(0, c('#e6b8b7', '#d8e4bc'))
        ) %&gt;%
        formatDate(c(3,5,6), "toLocaleDateString")
      })
  </code></pre>
  
  <p>As you see, style interval only formats values &lt;0 in red and values >0 in green. I however want only to format cells in red respective in green for which their respective date is "younger" than 10 days.</p>
  
  <p>For example column 200dMA (being column 2) should be only red if the value in this cell is &lt;0 and the date in column 3 is younger than 10 days. And it should be green if the value is >0 and the date in column 3 is younger than 10 days.</p>
  
  <p>How can I achieve that?</p>