[O] text background when exporting as HTML

[David Rogoff]

Hi all.

I'm using orgmode for outlines and documentation.  Since no one else I 
work with does this, I export to HTML which generally works fine. 
However, I've got a problem with embedded code samples using #+BEGIN_SRC 
/ #+END_SRC.   The faces for the source code are set up for a black 
background.  The exported HTML picked up the face colors, but the 
background is white, so they're mostly unreadable.  Is there a 
(hopefully simple) way to tell the HTML export to specify a black 
background for these blocks?

FYI, emacs 23.3.1, REH Linux, orgmode 7.5

Thanks,

 David