Twenty Ten theme, navigation, new features and presentation

For the perforated separator between each button, I would add the following to the bottom of the style.css of your child theme (You really should be working with a child theme of Twenty Ten so your changes aren’t overwritten when you upgrade the parent theme.):

.page_item {
  border-left: 1px dotted #ffffff;
}

That should create a dotted border on the left side of every nav button except the currently selected one, which has the class “current_page_item.”

If you want a color and highlighted block for the current page, I think all you’d need would be to add the following to the style.css:

.current_page_item {
  background-color: #594A42;
}