gtk and other graphical configuration under fluxbox

For some reasons, after a fresh install of fluxbox and fine tuning of the configuration, I had one issue with the icons set and font size in most of the applications.

I solved the problem by using a simple tool (not in command line, for once, in order to get the preview of the modifications): lxappearance

In few actions, I got what I need, icons are now back in thunar

I post this as a note for my next install and it might help others.

links :
http://fluxbox.org/
http://thunar.xfce.org/
http://sourceforge.net/projects/lxde/files/LXAppearance/