Index: runtime/kstyles/oxygen/oxygen.cpp
===================================================================
--- runtime/kstyles/oxygen/oxygen.cpp	(revisión: 790353)
+++ runtime/kstyles/oxygen/oxygen.cpp	(copia de trabajo)
@@ -3108,6 +3108,12 @@ QIcon OxygenStyle::standardIconImplement
 
 void OxygenStyle::renderWindowBackground(QPainter *p, const QRect &clipRect, const QWidget *widget) const
 {
+#if 1
+    // TODO: do not apply to all widgets. See what happens to buttons borders, for instance:
+    //       http://media.ereslibre.es/2008/03/goyatest1.png
+    return;
+#endif
+
     QRect r = widget->rect();
     QColor color = widget->palette().color(widget->backgroundRole());
     int splitY = qMin(300, 3*r.height()/4);