Comment 3 for bug 526722

I'm not very familiar with gtkrc commands, but a quick web search shows several examples of what one could do. Or, you could get more extensive examples by looking at the source of a GTK theme file.

Here is a tutorial:

  http://live.gnome.org/GnomeArt/Tutorials/GtkThemes

... and some reference documentation:

  http://library.gnome.org/devel/gtk/unstable/gtk-Resource-Files.html

... and a couple relatively simple examples of configuring a single app:

  http://xchatdata.net/Using/Gtkrc

This stuff is pretty much beyond the scope of TKDO, but I could include some pointers in a FAQ or other documentation if you think it would help. And if things really need to be easier, I could probably find a way to let the user configure the font directly from within the GUI. But in most cases, I would think the desktop configuration tools (GNOME control center, etc) should be sufficient. TKDO will simply follow the desktop theme settings chosen by the user.