title: How to set row back color on certain row in SlickGrid
body: <p>I want to color the first 3 rows in SlickGrid to Blue. I would like to know the easy way to do so. </p>
  
  <p>I tried following code but it doesn't work:</p>
  
  <pre><code>data.getItemMetadata = function (index)
  {
     if (index == 0 || index == 1 || index == 2)
     {
         return  {cssClasses: "BlueColor"};
     }      
   }
  </code></pre>