[Theme: Twenty Fourteen] Quick CSS Help. Changing Color

Hello, I’m pretty new at this:

https://6fa.a2a.myftpupload.com/

For the Category Section on the Primary Sidebar, it lists the categories. I’m trying to change the number next to it in parenthesis into a black color, but I can’t find it in the CSS. Does anyone know a fix to change the color? Thank you!