Please describe the problem:
I have a tree view that can have custom background color set by the code like this:

GdkColor color;
gdk_color_parse ("#ed4eea860537", &color);
gtk_widget_modify_base(GTK_WIDGET(treeview1), GTK_STATE_NORMAL, &color);

The problem is that the color resets to the white after the first tree operation is made (adding new node into the tree store).
Problem can be reproduced on Ubuntu Feisty and other Linux distros, but the code works fine on Windows OS using http://gladewin32.sourceforge.net (v 2.10.11) 



Steps to reproduce:
1. Get test program from http://notecase.sourceforge.net/test.zip
2. Compile and start, tree view is initially yellow
3. Press "Add" button to add new node into the tree


Actual results:
Tree view becomes white (bkg color)

Expected results:
Tree view should remember its color all the time (as it works correctly on Windows)

Does this happen every time?
Yes

Other information: