[@jaredatch Member 14 years, 6 months ago]

You are using 2.1, which is good.

What you need to do is tweak the CSS, I don’t recommend editing core, I would use this instead https://wordpress.org/extend/plugins/bbpress-custom-css-file/

bbpress.css, line 48 is what you need to change, ie

#bbpress-forums .status-closed, #bbpress-forums .status-closed a {

color: #CCC;

}