>>5418173tint2 is easy to customize, but there are other ways to get that look too.
If you want exactly he same look you could replace Openbox with fluxbox. But fluxbox themes are all pretty ugly...
Or you could replace tint2 with some other panel. here is a nice little list
https://wiki.archlinux.org/index.php/Lightweight_Applications#Taskbarsbmpanel is nice and you can find good looking configs for it from here
http://dotshare.it/category/panels/bmpanel/