"The reason why you hear talk of popular desktop environments
like GNOME and KDE in Linux is because you have a large amount of
freedom and a wide variety of choice in how your computer
looks.
"Sure, there are addons for Windows that let you customise
various facets and give it a bit of a facelift. Windows itself lets
you change themes, which largely amounts to different fonts,
colours and icons. Linux goes deeper than all these."