It seems there is a common misconception about how to define a region when using the Drupal and Joomla Theme building features in psd2css Online. The bottom line is that those layers you define that are named with the _joomla or _drupal Layer Naming Conventions get replaced by the content - they don't act as the background to the content. If you want a background (or border, etc.) for each region of content, you need to design that into your Photoshop file separately.
Here is the PSD used in the video:
http://psd2cssonline.com/tutorials/regions/Regions.psd
Here is a quick video to explain:
PERFECT instructions!
PERFECT instructions! I have been frustrated because i couldnt get my theme to work. But you have explained it perfectly! Thank you so much
Suggestion
O and.. I would suggest that you either reword your instructions on the front page for drupal, or just put this video very close to it.
Thank you again!