Hi
@RichelleLentz
I may be able to help with some additional information. What theme are you using, and are you talking about the sidebar?
!

For the sidebar in the Qualtrics 2017 theme you would use something like this:
.Skin #Toc li.Current, .Skin #Toc li.Current a, .Skin #Toc li.Current strong, .Skin #TocHeader td.Current a, .Skin body #Toc li.Current a {
background-color:unset;
color:#000;
}
The theme you are using may work similarly. Let me know what you are after specifically and I will give it a try.