problem with gtk-apps color on kde3.3 (newbie)

Hi everybody,

I have troubles when applying my kde-color to non-kde applications. The 
problem is that the colors seems to be just "partially imported" to the gtk 
apps.

There's a little screenshot here:
http://davn.rousseau.free.fr/pb_gtk_colors.jpg
As you see, the background of one part of the windows remains white, while the 
other backgrounds are green (as I whish). When I run the same app in the 
gnome environnement, everthing is correctly green. (you may think that I'm a 
little pernickety but it's really disturbing for me ! ;-).

Worse: when, in KDE environnement, I unselect the KDE option "export the color 
to non-kde apps", I can't change them with the gnome-theme-manager!! What 
changes when I select different themes is only the rest of the shape of the 
button, etc., but never the backgrounds and foregrounds colors !

Could anyone help me ?

Thank you by advance,

 
David