Good evening,
No, no and no, and just to be sure no, if you just want one
skin then it is very easy.
Once you get a forum you will find a folder called … WebWiz\css_styles\default
which has three files, one for users on a desktop, (default_style.css), one for
mobile users (mobile_default_style.css) and one you will never touch (printer_style.css)
If you are new to style sheets then
http://www.w3schools.com/
will explain style sheets.
If it would help I can send you the style sheets that I use, but I can't attach them to a post.
You can then open them in an editor and see how small changes make the difference. However I am going home now, so it would be tomorrow.
Bye
Ian