title: php-xlsxwriter: how to get a color in a row
body: <p>I have the follwoing code:</p>
  
  <pre><code>$writer-&gt;writeSheetHeader (Preisliste, $sheetheaders,
          ['auto_filter'=&gt;true, 'widths'=&gt;[20,35,12,40,15,8,8,10,13,13,13,13,13,13], 
          'font-style'=&gt;'bold', 'fill'=&gt;'#eee', 
          'freeze_rows'=&gt;1, 
          'freeze_columns'=&gt;0] );
  
  $writer-&gt;writeSheetRow(Preisliste, $sheetrow); 
  </code></pre>
  
  <p>Now I want to have a background color for example in the 3rd total row.
  I do not find a solution.</p>
  
  <p>Lookinf forward for help.
  Thanx.</p>