To highlight the last created or edited entry in a Admin-Generator-List copy the _list.php file from cache to your /apps/[APPNAME]/modules[MODULENAME]/templates directory and modify the code:
...
<tbody>
<?php $i = 1; foreach ($pager->getResults() as $mymodel): $odd = fmod(++$i, 2) ?>
<tr class="sf_admin_row_<?php echo $odd ?><?php if($sf_request->getParameter("id",0)==$mymodel->getId()) echo " rowsel"; ?>">
<?php include_partial('list_td_tabular', array('mymodel' => $mymodel)) ?>
<?php include_partial('list_td_actions', array('mymodel' => $mymodel)) ?>
</tr>
<?php endforeach; ?>
</tbody>
...
Add a stylesheet like this:
#sf_admin_container .sf_admin_list .rowsel td {
border-bottom:1px solid #DDDDDD;
border-right:1px solid #DDDDDD;
padding:3px;
background-color: #DDDDEE !important;
}
Done!

