go to advanced customization
enter a name (e.g. "Cleanly_Summarized") in the 'create a style' box and press enter.
select the following options:
layerid: 5984447 (select change) (select save changes)
You will now have a list of styles including "Cleanly_Summarized". You can click on the link next to the name, and see a preview of this style. Since the last time I showed this style, I have added features to display a login link if you are not logged in, and a update link.
layerid: 6008080 (select save changes)
You should also be able to see the summary rows alternating color when you select the preview of the style, set by bgcolor_1 and bgcolor_2. If you use the style as your default, you should be able to set these settings on the gui editor for the style.
I will be enhancing this style with more features (and more colorful display options) in the future, but this is a beginning and I thought this might be of general interest to the people on my freinds-list. If you use the style as your default, the second part can be done entirely from a gui-settings page rather than hand-creating the layer at the customize page, and then selecting "Customize" or "Edit Customizations" at the bottom.