To define background colors or patterns:
Select Report, then Report Properties, and then HTML.
When you define a background color or pattern from the report properties, it applies to your current report only. To define a background color or pattern for each report you create, access the HTML tab by choosing File/Edit, and then Preferences.
Define a background color or pattern and click OK.
To define a background color, click the list box next to Page Background Color and select a color from the color palette that appears.
To create a custom color, click Custom Colors at the bottom of the color palette and define a color.
To define a background pattern, select Background Pattern and enter a GIF or JPEG image in the field to the right.
To search for a particular image, click the button to the right of the Background Pattern field.
See Displaying Icons on the Navigation Bar for information on how to customize the background pattern or color on the navigation bar for HTML reports.