[Lynne]

You have this on that page:

<span class="member_username"><span style="color:#0046ad;">Jason Svoboda</span></span>

You should use a class for the username, instead of a style.
This:

<span class="usergroup6">

Instead of this:

<span style="color:#0046ad;">

Then you add to additional.css:

.usergroup6 {color: #0046ad;}

And also add this for the profile pages:

#member_content #sidebar_container .usergroup6 {color: white;}

See if something like that works.