The CSS for the table component in Woodstock has defined a background-color of white (#FFFFFF). This makes overriding it quite difficult.
I accomplished overriding it by placing the same element in the stylesheet.css file located in the project.
Here is what I added:
I then added my new css classes to the TableRowGroup as seen below.
The final result was to produce an elegent table with alternating colored rows.
Here is a link to the NetBeans 6.5 project on BitBucket: TableAlternateRowStriping