Problem link "element forum"



Here I explain the concern, when I change the links of categories and forums there was a problem.
Links are ok categories (blue)
But the links "elements forum" in each category are white /
and when I click on a category, sub-categories are also white
I change the colors in the "List of Boards> Title (unread) and Title Prefix
As in "List of forums / Elements> Event Title and Event Title (unread)
In the file Extra.css I tried everything as code (or not)

a:link, a:visited
  color: #000;
.discussionListItem .titleText{

Do you have an idea Please help me to solve this problem, thank you in advance.