A Windows theme is a collection of modifications to the interface which changes the way Windows looks and feels. A theme may alter the standard Windows icons, mouse cursor, and desktop background. It may also include new icons for My Computer, My Documents, My Network Place, Recycle Bin, and other standard Windows programs.
Windows themes are often developed and made available as free downloads, but some are also sold for a small fee. Each theme can be related to specific sports teams (or a general sport), cartoon characters, movies, celebrities, nature, vehicles, and about any other imaginable interest.