I figured out some other people would also be interested in the sort of formatting I intend to create for my static site's Page Menu Bar:
(1) Center the Page Menu items ("Home", "Contact Us", etc) instead of leaving them aligned to the left (default in Atahualpa).
(2) Colour the rest of the Page Menu Bar (the part that is not under the item buttons) in the same way as the buttons and not in light gray (default in Atahualpa).
(3) Place separators (such as "|", or ">>", or "-", etc) between the bar items.
There's other ways to format the buttons (animate them or produce a sound when the cursor hovers on, etc) but I think the previous 3 options would be enough to create a modern, sleek looking Page Menu Bar. All help / comments are welcome, thanks!
PD: Please see attachment for reference (the blue part is how I intend my Page Menu Bar to look).