[Gtk-sharp-list] GtkTree.Selection Color woes

[Juan Lupión]

I've narrowed the problem a bit, but I'm still at a loss.  The problem/feature 
seems to be that the selected items of aTree widget appear to be correctly 
highlighted as long as the tree widget remains focused.  This is independent 
of the selection mode (simple, multiple...)

When another widget gets the focus  the selected items inmediately get white 
background and black foreground, regardless of the background they should 
have according to the RulesHint setting...  (is this a bug?)

Shouldn't the selection be persistent?  Am I completely missing the point?

TIA