datatable download builder: jquery-ui missing textures?

ltdeta

I use jQuery UI with a theme that uses textures. There are two methods to include a jQuery UI style.

1) Method: jQuery UI ThemeRoller example
dataTables.jqueryui.css is loaded separately

2) Method: datatable download builder
Step 1. Choose styling => jQuery UI
datatables.css contains jQuery UI CSS styles

using Methode 1 ui-state-default

table.dataTable thead th.ui-state-default,
table.dataTable tfoot th.ui-state-default {
  border-left-width: 0;
}
table.dataTable thead th.ui-state-default:first-child,
table.dataTable tfoot th.ui-state-default:first-child {
  border-left-width: 1px;
}

using Methode 2 ui-state-default
table.dataTable thead > tr > *.ui-state-default { background: #f6f6f6; }

I have noticed that textures used with method 2 are lost.

The configured texture influences various elements, such as table headings.