bbpress fonr color change

Hi,

We are configuring our website, and cannot find where to configure the font color for the bb froum pages (like this one http://www.lolteaming.com/forums/forum/about-lolteaming/official-annoucement/ )

Note that the text is grey on a white background, thus making it hard to read.

I tried to find on both admin and css but could not find it.

Where can I change the font color?

Thank you