StyleVars >
Links >
link_color
However since you have a dark style... you might want the links that grey color or another and simply forum titles another color so I would edit forumbits.css and find:
Code:
.forumbit_post .foruminfo .forumdata .forumtitle a, .forumbit_nopost .forumbit_nopost .forumrow .forumtitle a {
font-weight:bold;
}
Now add in the color you want

i.e.
Code:
.forumbit_post .foruminfo .forumdata .forumtitle a, .forumbit_nopost .forumbit_nopost .forumrow .forumtitle a {
color: #ff0000;
font-weight:bold;
}
You could also do a :hover version of that as well if you wish otherwise it will hover the same color

.