Frankie, this one in that article you gave me caught my eye:
Customization
Many companies or schools are quite dull and want everybody's accounts to look alike. My school was like this and refused to allow you to change your desktop wallpaper or select a screensaver. However, what they didn't notice was that by selecting the "Windows Classic" theme you could choose to change the colors of every aspect of your system other than the desktop background or screensaver. I think that my class was much more interesting after I had taught everybody how to do this and after one person (not me, I'd never do anything wrong, honest!) changed the boring old IT technician's entire computer, including the text, to bright pink so it stood out from a mile away (slightly ironic, since the technician was the person who decided we all had to have identical desktops).
What does he mean? How does he do this?