I want to change background color (default color:white) of windows or progrm windows to image file (for example tiles)
to be filled.
How can I change windows background to image ?
Because I am sick of white colors, I want to have convient image color.

Welcome to windows 8. Some marketing genius thought the all flat look was the next hip-cool thing and there you go. With the release of the service pack you now get to choose between all white background or 2 shades of very light grey....

I can't use it myself. Even the Exchange 2013 ecp and owa is terrible. I can't tell what's a clickable button or what's a clickable link. Aethetics aside, the damn interface has to be usable... Microsoft I'm talking to you.