Space between module elements in left or right col

at the moment it is just one big grey block with three RSS feed modules and I would like to separate into 3 grey blocks divided by a blue margin on top, right, left and bottom of each block - so that any time i add a module to the left column it is not merged to the block but added as a separated block.

I still don't get what you want. I see this in left column - see attachment.

Above DBBl News feed you see a blue margin. I want that margin also on the bottom separating to the next module soccer feed. Each grey mdoule would appear as a grey block seperately surrounded by a blue margin top, bottom, left right.

In template_css.php

find this:

.column_left_top {
background:<?php echo $columnLeftColor; ?>;
}

modify it like this:

.column_left_top > div {
background:<?php echo $columnLeftColor; ?>;
padding-top:10px;
padding-bottom:10px;
}

i did it but nothing happened, please see joomla.bc-marburg.de

It seems that the module blocks need to be "split" somehow