vegasdesertsports
Hi
You can show the article via modules, like articles category module type or any other Joomla module.
If you want to show different articles you need to create new categories for each menu and add new articles for them.
I do not understand what you mean by menu bar white. When a menu is active it will show a different color, you can override in using this code in /css/custom.css file in template folder
#mainnav .nav > li.active > a, #mainnav .nav > li.active .separator {
color: #fff;
}
Regards