Adding a background image for Omega subtheme I've created a custom sub-theme for Omega and I want to change the background of the body to a specific image. I've edited the global.css file in the css folder of my subtheme.

body {
    background-image:url("images/starbkg.png") repeat;
     }


I've also made sure that global.css was enabled.  If I add background-color:black to the code the background does change color but I haven't been able to change the background image. I figured just by editing the global.css file I should be able to change the background image. No matter how many times I've flushed the cache and reloaded the page, the background image still won't show up. I've even tried creating a preprocess file. In the preprocess folder of my theme.

&lt;?php
/**
* Preprocess HTML.
*
* Implements hook_alpha_preprocess_html().
*/
function myth_preprocess_html(&amp;$variables) {

  $variables['classes_array'][] = 'body';
}
?&gt; 


(myth is the name of my theme)

I don't need the background to re-size or change, I just want something that sits behind all the other areas on the page and is persistent across all the content. 
When I inspect the page I find that 

&lt;body class="html front not-logged-in page-node omega-mediaqueries-processed alpha-  debug-processed responsive-layout-wide"&gt;


hasn't changed to indicate a background. 
I've looked into various modules that I would like to avoid and I was hoping to find something relatively simple. I have managed to change the background on non-Omega based themes so I suspect there is something that Omega does that I'm missing. 

Thanks in advance for your assistance.
You shouldn't need to do any of the preprocess stuff.  We recently had some problems getting things to apply via the global.css file - but we figured them out.

Here is the trick of it.  Even though you apply X in the global.css file, if Y is applied in one of the stock css files, and you don't turn off Y (via css in your global.css) - and Y in some way impacts X - X won't be active.

I recommend either Firefox and Firebug - or Chrome and "right click -> inspect" - and really scrutinize the DOM.

Also - regarding your image file - you might try specifying a full path.  We have had issues with relative paths.

I hope this helps.