again me and bbPress

That's a standard bbPress styling issue.

You can adjust it with this:

#bbpress-forums .status-closed, 
#bbpress-forums .status-closed a {
    color: #222222;
}

ok thanks. the topic is also greyed out. is there a fix for that too? i mean the topic under forums -> general talk -> topic
not the content.

I've edited the code above :)

Thank you very much! I've changed it to this, so the topic still looks a bit grayed out. And the font inside the post is now just black - which doesn't indicate early that it's closed but - I think it's the best solution.

#bbpress-forums .status-closed {
color: #222222;
}
#bbpress-forums .status-closed a {
color: #D5B3A4;
}

Awesome :)