These boards can now be customized from the chats Options (gui_opt.php).
If you for some reason wants the standard values back, just delete a value (set it to an empty box) and save the changes.
That will make it go back to default.
It´s possible, but through a bit unconventional way.
Set the Bgcolor to "
FFFFFF background=http://chat.projectjj.dk/gfx/up_tile.gif" for example, and it will use http://chat.projectjj.dk/gfx/up_tile.gif as background.