I think the current menu item should be active on the npmjs website, like on the Node.js website:
Otherwise, one could think that this menu is for navigating on the npmjs website only, and be confused by the redirection on the Node.js website.
Yeah. It should probably be red or something.
Originally, there was the idea for that section expanding and having sub-items, but it's not implemented, and not obvious what it should be.
+1 for that
Plus, there's already a sprite for that: http://nodejs.org/images/icons-interior.png (Minus: It's green...)