Add column search/filtering highlight

features/searchHighlight/dataTables.searchHighlight.css

@@ -2,5 +2,10 @@
 
 table.dataTable span.highlight {
   background-color: #FFFF88;
+  border-radius: 0.28571429rem;
 }
 
+table.dataTable span.column_highlight {
+  background-color: #ffcc99;
+  border-radius: 0.28571429rem;
+}

features/searchHighlight/dataTables.searchHighlight.js

@@ -43,10 +43,16 @@ function highlight( body, table )
 
 	// Don't highlight the "not found" row, so we get the rows using the api
 	if ( table.rows( { filter: 'applied' } ).data().length ) {
+		table.columns().every( function () {
+				var column = this;
+				column.nodes().flatten().to$().unhighlight({ className: 'column_highlight' });
+				column.nodes().flatten().to$().highlight( $.trim( column.search() ).split(/\s+/), { className: 'column_highlight' } );
+		} );
 		body.highlight( $.trim( table.search() ).split(/\s+/) );
 	}
 }
 
+
 // Listen for DataTables initialisations
 $(document).on( 'init.dt.dth', function (e, settings, json) {
 	if ( e.namespace !== 'dt' ) {