title: handsOnTable cell coloring
body: <p>I have a Handsontable table filled with data and already rendered</p>
  
  <p>After checking the cells, I have located a couple of cells of interest and would like to color them - is there a good way to do this using the Handsontable code? </p>
  
  <p>Please note this is after loading and rendering the table</p>
  
  <p>Edit: </p>
  
  <p>The table is rendered with basic options:</p>
  
  <pre><code>$container.handsontable({
      startRows: 8,
      startCols: 6,
      rowHeaders: true,
      colHeaders: true,
      minSpareRows: 1,
      minSpareCols: 1,
      //contextMenu: false,
      cells: function (row, col, prop) {
      }
    });
  </code></pre>
  
  <p>And the data is loaded via Ajax, decode_file.php reads an excel sheet and returns data as JSON:</p>
  
  <pre><code>  $.ajax({
        url: "decode_file.php",
        type: 'GET',
        success: function (res) {
          handsontable.loadData(res.data);
          console.log('Data loaded');
        },
        error: function (res) {
          console.log("Error : " + res.code);
        }
      });
  </code></pre>
  
  <p>After loading the data, the user clicks a "Process" button and the code looks for a cell with the text "Hello world". Let's say the code finds the text "Hello World" in cell <strong>row 4/col 5</strong> and changed the background color of cell <strong>row 4/col 5</strong> to <strong>red</strong></p>