diff --git a/qwt/src/qwt_plot_curve.cpp b/qwt/src/qwt_plot_curve.cpp
index 140cc5996..dcb6935e4 100644
--- a/qwt/src/qwt_plot_curve.cpp
+++ b/qwt/src/qwt_plot_curve.cpp
@@ -94,6 +94,8 @@ public:
     QwtPlotCurve::PaintAttributes paintAttributes;
 
     QwtPlotCurve::LegendAttributes legendAttributes;
+
+    QVector<QwtZone>zones;
 };
 
 /*!
@@ -845,6 +847,7 @@ void QwtPlotCurve::fillCurve( QPainter *painter,
     if ( d_data->brush.style() == Qt::NoBrush )
         return;
 
+    double avg=(yMap.invTransform(polygon[0].y())+yMap.invTransform(polygon[1].y())) / 2.00;
     closePolyline( painter, xMap, yMap, polygon );
     if ( polygon.count() <= 2 ) // a line can't be filled
         return;
@@ -861,6 +864,27 @@ void QwtPlotCurve::fillCurve( QPainter *painter,
     painter->setPen( Qt::NoPen );
     painter->setBrush( brush );
 
+    // if we have zones we need to process the polygon point by point...
+    if (d_data->zones.count()>0 && polygon.count() == 4) {
+
+        // we need to set color based upon zone
+        double alpha = d_data->brush.color().alphaF();
+        QColor color = d_data->brush.color();
+
+        if (avg < 1) color=Qt::black;
+        else{
+        for(int i=0; i<d_data->zones.count(); i++) {
+            if (avg < d_data->zones[i].lim) {
+                color = d_data->zones[i].color;
+                color.setAlphaF(alpha);
+                break;
+            }
+        }
+        }
+        brush.setColor(color);
+        painter->setBrush(brush);
+    }
+
     QwtPainter::drawPolygon( painter, polygon );
 
     painter->restore();
@@ -975,6 +999,15 @@ void QwtPlotCurve::setBaseline( double value )
     }
 }
 
+void QwtPlotCurve::setZones(QVector<QwtZone> zones)
+{
+    d_data->zones = zones;
+}
+
+QVector<QwtZone> &QwtPlotCurve::zones() {
+    return d_data->zones;
+}
+
 /*!
   \return Value of the baseline
   \sa setBaseline()
diff --git a/qwt/src/qwt_plot_curve.h b/qwt/src/qwt_plot_curve.h
index 3421abf81..0556738a5 100644
--- a/qwt/src/qwt_plot_curve.h
+++ b/qwt/src/qwt_plot_curve.h
@@ -22,6 +22,7 @@ class QPolygonF;
 class QwtScaleMap;
 class QwtSymbol;
 class QwtCurveFitter;
+class QwtZone;
 
 /*!
   \brief A plot item, that represents a series of points
@@ -248,6 +249,9 @@ public:
     void setBrush( const QBrush & );
     const QBrush &brush() const;
 
+    void setZones(QVector<QwtZone>);
+    QVector<QwtZone> &zones();
+
     void setBaseline( double );
     double baseline() const;
 
@@ -306,6 +310,14 @@ private:
     PrivateData *d_data;
 };
 
+class QwtZone {
+public:
+    QwtZone(double l, QColor c) : lim(l), color(c) {}
+    QwtZone() : lim(0), color(QColor(Qt::black)) {}
+    double lim;     // less than this?
+    QColor color;   // make it this color then
+};
+
 //! boundingRect().left()
 inline double QwtPlotCurve::minXValue() const
 {
diff --git a/src/Charts/AllPlot.cpp b/src/Charts/AllPlot.cpp
index d574c2d30..f55346212 100644
--- a/src/Charts/AllPlot.cpp
+++ b/src/Charts/AllPlot.cpp
@@ -525,6 +525,15 @@ AllPlotObject::setUserData(QList<UserData*>user)
         add.color = userdata->color;
         add.color.setAlpha(200);
 
+#if 0 // just for testing zones, will be deleted shortly XXX
+        // set zones - just for testing during development of zone curve
+        QVector<QwtZone> zones;
+        zones << QwtZone(210, Qt::green);
+        zones << QwtZone(300, Qt::yellow);
+        zones << QwtZone(9999, Qt::red);
+        add.curve->setZones(zones);
+#endif
+
         QPen pen;
         pen.setWidth(1.0);
         pen.setColor(userdata->color);