Yes. Hit your avatar in the upper right hand corner of the forum. That pops open a a variety of items to choose from. Hit the little person on the far right and that takes you to options. Play around in there and you can find many things, including a dark mode.
At the top of the page is the Title and the Forum next to CFI. They are all links. For instance, click on General Discussion under the title of the thread, and it takes you back to the General Discussion list.