I think I'm confusing you. Let me start over.
No sidebars are being used.
I'm using pages.
layout width 100% with MIN width 800 and max width 1100.
I have a background image for the entire site that spans the browser window.
(ex;background: url(/wp-content/themes/atahualpa/images/tile-gray2.jpg) repeat top left;
I have a background color for the CENTER COLUMN ex#d9d9d9, this is what I want to have an opacity of 60%. Only the solid background color.
the same with the footer...
I have a background color for the FOOTER STYLE ex#d9d9d9, this is what I want to have an opacity of 60%. Only the solid background color.
What I dont want
is the content in the Center Column & Footer (Type, Photos, Video) to have a 60% value, these need to be 100%.
This is another good example: http://singularityconcepts.com
See how the column backgrounds are transparent but the photos and type are solid. Thats the style I'm trying to achieve.
Sorry for the confusion and thanks for the patience.