Windows theming with default theme.

ui/mainwindow_init_win.go

@@ -7,4 +7,9 @@ import (
 
 func (m *MainWindow) initializeWin() {
     platform.HideConsole(true)
+
+    dir, _ := filepath.Abs(filepath.Dir(os.Args[0]))
+
+    // ToDo: theming support and theme seletion in settings.
+    gtk.RCParse(dir + "/themes/MS-Windows/gtk-2.0/gtkrc")
 }