You can always make the background color extremely close the text color as well. That way even if a visitor has backgrounds 'turned off' it should still look ok. I had to do this on my site, because I have a black background and a white table with black text. In order to avoid being penalized, I made the background color un-noticeably off-black.
>I saw this on another site and was wondering what your opions are and if there are any possible penalties from the search engines.
>On the site a background color was listed and a background image was used. The text with keywords was then on the site matching the background image. >The text was invisible and was a differnt #xxxxx then the background color. >It seems to me like a good way of getting a higher ranking in the search engines. >Comments?