Okay by now your probably fed up looking at the default page background colour - so how to change it?

Well what we are talking about is the following (thanks Marcus - please feel free to do some more of these!)

Open the main css file views/default/css.php with your text editor.

Scroll down to the 'body' tag (line 82)

body {
    text-align:left;
    margin:0 auto;
    padding:0;
    background: #4690D6;
    font: 80%/1.4  "Lucida Grande", Verdana, sans-serif;
    color: #333333;
}

Change the value of 'background' to whatever color you want or if you want to change it to an image then make sure that your background image is located in the graphics folder/directory of your theme and change it to point to the file...

    background-image: url(../../../../../graphics/lighttex.gif);

now save the file, click on Administration > Tool Administration and adjust the position of one of the plugins (remember to make sure your theme is the bottom of the list) Then click on Dashboard and refresh your screen and the changes should be apparent.