Add selector for the source of contextual menu

I note it is possible that an element generates a context menu with its 
own menu and an id in HTML5 (with attribut contextmenu && <menu 
type="popup">). Except that, it is not possible with this menu 
contextual to highlighting the element generating it, like this : 
http://ikilote.net/Vieux_Sites/Site_Ikilote/V4.2/Collection_Menucontext_1.png

It is possible to add a selector for that ? Like this example :

div:hover,
div:source-context {
     background-color:red;
}

Best regards.