@brackin Thanks for the comment. Both fair points. I submitted it because I thought it might be helpful for experienced people who keep getting asked for help. The six hours refers to my (fairly leisurely - read non-specialist) pace; I didn't factor in propagation because I was just counting the time taken by the creator.
[Edit: reposted so it's threaded with the original comment.]
No worries; thanks. There isn't a multiple-choice section for changing the look of the site, but the CSS code that determines the look is pretty clearly laid-out. I'd advise two things: 1) only change one thing at a time, and 2) before you begin, make a copy of the CSS file so you can always reset if you need to.