[gnome-nibbles] Enforce dark theme

[Iulian Radu <iulianradu src gnome org>]

commit c8b730f963c28dc094d67378195790bc7baf94ce
Author: Iulian Radu <iulian radu67 gmail com>
Date:   Thu Aug 20 20:01:28 2015 +0300

    Enforce dark theme

 src/gnome-nibbles.vala |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gnome-nibbles.vala b/src/gnome-nibbles.vala
index a24b55c..69719ac 100644
--- a/src/gnome-nibbles.vala
+++ b/src/gnome-nibbles.vala
@@ -121,6 +121,8 @@ public class Nibbles : Gtk.Application
     {
         base.startup ();
 
+        Gtk.Settings.get_default ().set ("gtk-application-prefer-dark-theme", true);
+
         var css_provider = new Gtk.CssProvider ();
         css_provider.load_from_resource ("/org/gnome/nibbles/ui/nibbles.css");
         Gtk.StyleContext.add_provider_for_screen (Gdk.Screen.get_default (), css_provider, 
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);