It can be preferred for the use of dark color applied throughout your theme.
You can use the Forum in a visually wider structure.
You can switch to grid view by changing the forums listing structure.
Pictorial grid view
You can turn on/off the assigned background images for forums in grid view.
You can get rid of the crowded view by closing the forum sidebar.
Paste the sidebar
It provides a sticky sidebar handling sensitive to scroll bar gestures.
Header field animation
You can turn on/off the moving parts in the header area.