Nice But Needs More Configuration Rated 4 out of 5 stars
I really like the idea behind this extension. It is very useful to be able to highlight the domain. It works as advertised, but isn't perfect (yet).
Where Locationbar^2 falls short for me is in configuration. I don't want to have to mess with CSS in UserChrome.css to set the colors as I'd like. The options panel should provide the means to set colors for each component of the URL. After all, you already offer that for the domain, so it shouldn't be hard to add for the others. Obviously, that means the current "gray" options would no longer apply.
One other point is that when holding a modifier (Ctrl, Alt, etc.) and the protocol or pathname are normally grayed out, the text should no longer be grayed out.