window shopping n. [US Geological Survey] Among users of {WIMP
   environment}s like {X} or the Macintosh, extended experimentation with
   new window colors, fonts, and icon shapes. This activity can take up
   hours of what might otherwise have been productive working time. "I
   spent the afternoon window shopping until I found the coolest shade of
   green for my active window borders -- now they perfectly match my medium
   slate blue background." Serious window shoppers will spend their days
   with bitmap editors, creating new and different icons and background
   patterns for all to see. Also: `window dressing', the act of applying
   new fonts, colors, etc. See {fritterware}, compare {macdink}.


Source: The Jargon File