Then you should manually change the CSS rules from
/templates/<yourjoomlatemplate>/html/com_virtuemart/assets/css/flexibleVM2Global.css
First, use the "Firebug" and see what DIV element ID your pagination elements are using. It is
<div id="bottom-pagination">
Also the Scheme looks like this (in original Joomla):
<div id="bottom-pagination">
<ul>
<li class="pagination-start">
<span class="pagenav">Start</span>
</li>
<li class="pagination-prev">
<span class="pagenav">Prev</span>
</li>
<li>
<span class="pagenav">1</span>
</li>
......
.....
.....
<li class="pagination-next">
<a class="pagenav" href="......" title="Next">Next</a>
</li>
<li class="pagination-end">
<a class="pagenav" href="....." title="End">End</a>
</li>
</ul>
</div>
In original Joomla, but apparently this PHP file:
ROOT/templates/<yourjoomlatemplatefolder>/html/pagination.php
is changing the scheme or the DIV element ID or Class names to something else to let the K2 Component controls them.
Use Firebug to see the DIV element ID and LI classes.
Then open this
/templates/<yourjoomlatemplate>/html/com_virtuemart/assets/css/flexibleVM2Global.css
and change the CSS rules.
lets say, the DIV element ID is something like this:
<div id="paginationK2">
Then in the
/templates/<yourjoomlatemplate>/html/com_virtuemart/assets/css/flexibleVM2Global.css
Where ever you see "bottom-pagination", replace it with "paginationK2" for example;
div#bottom-pagination ul li span {
background-color:#FAFAFA;
margin:1px;
padding:8px;
color:#FFFFFF;
border:1px solid #d8d8d8;
font-family: 'Oswald', sans-serif;
-webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.1) inset;
-moz-box-shadow:0 0 10px rgba(0, 0, 0, 0.1) inset;
box-shadow:0 0 10px rgba(0, 0, 0, 0.1) inset;
display:block;
color:#CCC;
}
change it to:
div#paginationK2 ul li span {
background-color:#FAFAFA;
margin:1px;
padding:8px;
color:#FFFFFF;
border:1px solid #d8d8d8;
font-family: 'Oswald', sans-serif;
-webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.1) inset;
-moz-box-shadow:0 0 10px rgba(0, 0, 0, 0.1) inset;
box-shadow:0 0 10px rgba(0, 0, 0, 0.1) inset;
display:block;
color:#CCC;
}
Regards.