#toplevel_page_newsman-mailbox .wp-menu-image {
	background: url(../img/logo-icon-gray.png) no-repeat 7px 7px;
}

#toplevel_page_newsman-mailbox:hover .wp-menu-image,
#toplevel_page_newsman-mailbox.wp-menu-open .wp-menu-image {
	background: url(../img/logo-icon-color.png) no-repeat 7px 7px;
}