good question, I also wondered.
or at least change the background to something else ..
That can be done if you include the image url with an attribute in the body tag of index.php file which can be found on templetes -> default
How to do it? and where to find the Body tag? there is an example?
No, there is not an example..
Can someone write an example of code with an attribute?
http://www.w3schools.com/html/default.asp
Well i don't think he deserve to study the whole Basic HTML to write that simple code
To write such code you only need basic knowledge of HTML.
And somewhere today i will write that code including every steps to change the Background. Its easy so no need to keep asking about it again and again