Problem with obconf / ob multihead

Hi,

im not sure if this is a thing for opening an issue because i dont know where to investigate or what i have to look for. Perhaps its my fault... my problem is that i cant use obconf on my archlinux 64bit with openbox-multihead. Im getting this output:

```~ $ obconf

(obconf:25518): Gtk-WARNING **: GtkSpinButton: setting adjustment with non-zero page size is deprecated
ObRender-Message: Unable to parse color '#0000000'
Speicherzugriffsfehler (means Segfault)

```

With the standard openbox i dont have this problem.
I hope you can tell me how to solve this.
Since im coming from xmonad to openbox i have to tell you that i love the desktop model you have implemented!

Sincerly,
Guido Kleine
```

Start with the obconf invocation and the reported GtkSpinButton warning, ObRender color-parse error, and segmentation fault. Compare behavior with standard openbox versus openbox-multihead on Arch Linux; done means reproducing the crash and identifying a confirmed fix or a precise cause.

Written by the indexing model from the issue text.