So far so good. Now try this combination - Press Alt, Shift and Print Screen together. And don't worry, you can always restore your previous desktop theme by pressing the same keyboard shortcut again.
Here's what happened to our desktop [before and after screenshots].


This is no XP Easter egg but a resident High Contrast XP color theme designed for people with vision impairment. [via Web Stuff Scan].
Related: Office Pranks - Freeze any Windows Desktop
Reader Comments
OSX has the same command at Command-Option-Control-8
Written on 9/1/07 1:50 AM
Only the Left handed side Alt and Shift works
Not the right hand side
Written on 9/1/07 3:13 AM
Sure has not changed in Vista :-)
Written on 9/1/07 5:46 AM
What ? I seem to get this when I hit the (left) ALT+SHIFT+PRINT-SCREEN.
Im using WinXP Pro SP2(OEM version).
Written on 9/1/07 7:30 AM
somebody with normal vision might get vision impairment..
Written on 9/1/07 11:23 AM
Basically just changes the windows scheme to one of your choice, by default the high contrast one.
heh, reminds me of the scheme voted worst ever; the "hot-dog stand" scheme in windows 3.1
Written on 9/1/07 2:39 PM
Been using XP for quite some time now and did not know that about the high-contrast or about the ALT+Print Screen.
Thanks!
Written on 9/1/07 6:51 PM
I get the same warning dialog as Anjanesh. Kinda nice that it warns you before such a drastic change.
Written on 9/1/07 8:43 PM