问题
There are many themes in NetBeans with black (or dark) background. But how can I do black backgroung in project-navigation panel

回答1:
It is not possible to do this with netbeans themes. You are using windows, so you can change the windows theme (for linux it would be the GTK theme) to achieve this. But this will reflect to other applications you are using.
回答2:
It is possible by installing some Netbeans plugin. I use ez-on-da-ice (gray background, on linux Mint 13, didn't tested it on Windows) with Monokai theme.
However, stay tuned: Netbeans 7.3.1 will include a couple of dark themes by default!. If you can't wait, just download some 7.3 nightly build right now...
EDIT: Just grab the latest stable version and enjoy.
回答3:
Besnik is correct that NetBeans won't do this for you, but your graphics driver or window manager (Linux) may allow you to invert the entire screen. I do this as a black ground is much easier on my eyes.
On Windows I use the awesome utility NegativeScreen by Melvyn Laily.
来源:https://stackoverflow.com/questions/11585032/netbeans-theme-with-black-background