title: Issue with Datatables Header colour
body: <p>I'm using dataTable in my project and using jquery UI as styling framework, I wish to change the table header colour so I used <code>.ui-datatable-header</code> to change the colour, but it does not have any effects on my table, please suggest me some solution,
  Here is working <a href="http://live.datatables.net/lavodilu/1/edit" rel="nofollow noreferrer">demo</a></p>