.ow_main_menu .iclassifieds_menutext_value {
background: url("/ow_userfiles/themes/main_myfile.png")no-repeat 10px center; }
change the iclassifieds the the page menu its for and the url to the icon you want to use
<li class="base_page_77472630">
<li class="base_page_77023605">
<li class="base_page_42558969">
<li class="base_page_67441278">
<li class="base_page_62215262">
<li class="base_page_67767487">
Add a line like this to your custom css for each of your base pages. The \e000 I added is the unicode for user-female that you will see as the first one in the attached unicode list. This is just an example of how it should look. The icon fonts work, and follow the colors of your menu.
.base_page_86233063 a::before {
content: "\e000" !important;
}
I've also attached a screenshot of the menu showing that it follows the menu colors, and hover effect.