vB4 What am i missing?
 

Is it me, or is it nearly impossible to find and then edit some of the css in a vbulletin 4 skin?

I want to change the navbuttons class (screen @ http://www.leaguegaming.com/temp/vb4.jpg), i know i need to find the `breadcrumb` class, but i can't find any trace to it.
How would i change

.breadcrumb .navbit > a, .breadcrumb .lastnavbit span {

-moz-border-radius:5px 5px 5px 5px;
background-color:transparent;
border:1px solid;
display:block;
float:left;
padding:2px 4px;

}

to

.breadcrumb .navbit > a, .breadcrumb .lastnavbit span {

-moz-border-radius:5px 5px 5px 5px;
background-color:yellow;
border:1px solid;
display:block;
float:left;
padding:2px 4px;

}