So I've been using openbox for the past month and it's definitely my favorite desktop environment so far. While I love gnome I find that it's too bloated, I love the ability to customize openbox with relative ease. Not only is it a lot faster, but it's also a lot cleaner and compact. Recently I installed pypanel after messing with fbpanel, I find both are similar in resources. However fbpanel lacks a little on customization, while at the same time offers a pager. However I added netwmpager as my pager and it's awesome, gives a lot of functionality and customization.
Here is my current openbox desktop:
You might be asking yourself, how I have a skinned the taskbar with pypanel. The answer is that I cheated, I edited my wallpaper to include the panel and the background behind conky. Then I made both pypanel and conky transparent.
Here are 2 of the panels (and conky style backgrounds) I have created, they are transparent PNGs so you will need to edit them and add your background behind them. Both are sized to 1280x1024, you will need to resize/move or cut up the files to make them fit on your wallpaper. Both are made from scratch, you are free to do what you want with them. I cannot release the wallpaper versions because the wallpaper are not made by me, but it's easy enough to edit.
Transparent Green Version
You can download the BlueSmoke openbox theme I created from here. Give me a good rating if you like it :p
The wallpaper that I am using is called Dyrou, it's offered in a number of colors you can download it here.
Here are all my settings, make sure to edit them before using.
~/Files/System/Scripts/dzen_calendar (Taken from urukrama)
~/Files/System/Scripts/themeinfo.py (Taken from dbbolton)
~/.fbpanel/default (unrelated to this theme but I also have a edited fbpanel)
I'm using a GTK theme called Clorgon and the Elementary icon theme.
That should be all, I highly recommend reading urukrama's openbox guide and all of his openbox related postings, very well written and very informative. Also K.Mandla offers a lot of interesting openbox related information. If you want to see some great openbox related screenshots, check out urukrama's screenshots section.