We've made two adjustments so that the forums and thread listings are more easily-read. First, we made all thread titles bold so you cna read them among the other text around it, which is similar to the old forum.
Second, we changed the icons to indicate read/unread threads. If it's unread, it is red. Read is gray.
The icons also have other features to them. If you see a green dot in the icon, it means that you have posted in that thread at some point in the past. If the plane in the icon has contrails, it means that it is a "hot" thread that has more than 400 views.
Let us know if you have any other questions or issues.