Hi everyone, I found a nice simple solution, although I agree it isn't the "more eficient one"
First I've modified the header.php to include a css file to load once detected on the portfolio page:
<?php if ( 'portfolio' == get_post_type() ) { ?>
<link rel="stylesheet" type="text/css" media="all" href="<?php bloginfo('template_url'); ?>/css/portfolio.css" />
<?php } ?>
Second I added this to my portfolio.css file:
#menu-item-47{
font-weight: bold;
}
I got the #menu-item-47 id using firebug so it will work only on my website, but be sure to change it to what ever ID your website has, and it will from that you can apply whatever style you want on your portfolio page.
If anyone has a nicer solution it's very welcome I know my solution isn't as fancy but you don't have to modify any source code, wordpress' nor the plugin's.
:cheers: all the way down from Guatemala