diff -r edad8a7bcaea -r 31e4f6c1834b QTfrontend/ui/widget/colorwidget.h
--- a/QTfrontend/ui/widget/colorwidget.h	Sat Oct 13 00:35:20 2012 +0400
+++ b/QTfrontend/ui/widget/colorwidget.h	Sat Oct 13 13:13:15 2012 +0200
@@ -35,6 +35,8 @@
 protected:
     void mousePressEvent(QMouseEvent * event);
     void wheelEvent(QWheelEvent * event);
+    void nextColor();
+    void previousColor();
 };
 
 #endif // COLORWIDGET_H