If I understand what you need, i had the same problem. I solved it in this way: in templates/ja_mesolite_ii/css/ja.vm.css after this code
<blockquote>/*Categories Module*/
a.mainlevel {
display: block;
outline: none;
padding: 8px 15px 9px;
margin: 0;
text-decoration: none;
text-transform: uppercase;
color: #666666;
border-top: 1px solid #E6E6E6;
background: url(../images/arrow.png) no-repeat 92% 14px;
}
a.mainlevel:hover, a.mainlevel:active, a.mainlevel:focus {
background: url(../images/arrow.png) no-repeat 92% 14px #F7F7F7;
text-decoration: none;
}
</blockquote>
i add
<blockquote>
a.sublevel {
padding: 8px 0 0 16px;
font-style: normal !important;
}
a.sublevel:hover, a.sublevel:active, a.sublevel:focus {
text-decoration: none;
}
</blockquote>