WP 2.8.6
ATO 3.4.4

http://realindustryrecords.com/

There is a white space between my widgets that I want to be the same color as my widget elements.

I have already added the color I want to the Widget Container, Title Box, and Content Box elements, as well as adding the styling to my Left Sidebar style editor

using the following line in the above: background: #CCFF00;

Any thoughts? Cheers.

that is caused by the bottom margin on the widget (ATO->Style WIDGETS->Widget Container) which is:
margin: 0 0 15px 0;
where the first is the top, then right, bottom, and left, so you have a 15px bottom margin.

While you could set it to 0, you would loose teh spacing, a simpler solution would be to style the background of the left sidebar (ATO->Style & configure SIDEBARS->LEFT sidebar style) to

border-right: dashed 1px #CCCCCC;
padding: 10px 10px 10px 10px;
background: #CCFF00;

tried that, didnt work. check out results.

http://realindustryrecords.com/

that's because you have TWO background rules and the second 'background;#ffffff;' overrides the first and so sets the color to white.

What element in ATO has the second bgcolor #ffffff ? I looked through and couldnt see what it was.

Thanks muchly for the help.

The left sidebar styling

Here is my left sidebar styling from ATO, its the same as the one you posted above:

border-right: dashed 1px #CCCCCC;
padding: 10px 10px 10px 10px;
background: #CCFF00;

where is the white coming from?

did you scroll your cursor down? WordPress can hide items in a opton box by making the box to small.
The Styling for both your left and left inner sidebars ihave teh same problem. Here is the generated code

td#left {
vertical-align:top;
border-right:dashed 1px #CCCCCC;
padding:10px 10px 10px 10px;
background:#CCFF00;
background:#ffffff
}

td#left-inner {
vertical-align:top;
border-right:dashed 1px #CCCCCC;
padding:10px 10px 10px 10px;
background:#CCFF00;
background:#ffffff
}

Put your cursor in the style box and do a select all.

Brilliant, thanks for your help.

Never would have got that on my own! pretty tricky.