Just over the course of last week, I did a minor re-design of this website. For better readability, I reversed the background between the header/sidebar area and the content area.
So now the content area has a white background for better text legibility. Before, the background directly behind the content text might have been distracting for readers.
In addition, I switched the link colors in the main content area to blue, while the sidebar has the copper color links.