I would like to change the background color of a toolbar , dropDownMenu  and menuItem. So far it works except that I couldn't figure out how to change the background color of the toolbar item and menu item when the mouse cursor is over the item. 

.rf-tb { 

    background-image:none; 

    background-color: #285C95; 

}

.rf-ddm-lbl {

    color: white; 

     background-color: #285C95;   

}

.rf-ddm-itm {

    background-color: #285C95;  

}

.rf-ddm-itm-lbl {

    background-color: #285C95;  

    color: white; 

}

But I couldn't find something like .rf-ddm-itm:hover

Regards

  Roger