title: Background color for GTK_WINDOW_TOPLEVEL Gtk Widget
body: <p>In the following code, I want the background colour of the main GTK_WINDOW_TOPLEVEL to be 0xc0deed. But when I run it is appearing black. I even tried gtk_drawing_area_new and adding it to the main window. But still it is appearing black although I could get other colours like red, blue, white etc</p>
  
  <pre><code>#include &lt;gtk/gtk.h&gt;
  
  int main( int argc, char *argv[])
  {
      GtkWidget *p_s_window = NULL;
      GdkColor color;
      color.red = 0x00C0;
      color.green = 0x00DE;
      color.blue = 0x00ED;
      gtk_init(&amp;argc, &amp;argv);
      p_s_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
      gtk_window_set_position(GTK_WINDOW(p_s_window), GTK_WIN_POS_CENTER);
      gtk_window_set_title(GTK_WINDOW(p_s_window), "hello");
      gtk_widget_modify_bg(p_s_window, GTK_STATE_NORMAL, &amp;color);
      g_signal_connect_swapped(G_OBJECT(p_s_window), "destroy",
              G_CALLBACK(gtk_main_quit), NULL);
      gtk_widget_show_all(p_s_window);
      gtk_main();
      return 0;
  }
  </code></pre>