Let me see if I can help you out.
Widgets:
You can add content to these by going to the Appearance section of your WordPress control panel and selecting widgets. From there you can drag the available widgets (in the middle) to the widget areas or sidebars on the right. The sidebars all have names and brief descriptions to explain where they are visible in the theme. Once you’ve added a widget to a sidebar you’ll see a small configuration panel pop up so you can add set it up as you wish there.
Menus:
To set up your menus, go to the Appearance section and select menu. From there you can add your pages and categories to a custom menu. There is a quick screencast in our video section that shows how to set them up.
Front Page
By default, WordPress will display your most recent posts on your home page. If you’d like to use a page (like the demo does), go to the Settings section of your WordPress control panel and select reading. There you can specify a specific page to have on your home page as well as another page to serve as your blog page.
You can change the background color for the content areas. The only tricky part is Internet Explorer 8 and below need an image to make the semi-transparent background work well. I’d be glad to make an image for you, if you’ll let me know what color you had in mind.
If you have any trouble let me know and if possible, send a link to your site too so I can take a closer look for you.
Take care,
Bill