diff --git a/src/params/SymbolPlotting.xml b/src/params/SymbolPlotting.xml
index f5fa53aa..231a792f 100644
--- a/src/params/SymbolPlotting.xml
+++ b/src/params/SymbolPlotting.xml
@@ -312,6 +312,40 @@ does it submit to any jurisdiction.
 			<documentation>With GeoSon : list of colours to use</documentation>
 		</parameter>
 
+		<parameter member="property_height_name"
+			to="string"
+			default="colour"
+			from="string"
+			name="symbol_property_lightness_name"
+			visible='off'>
+			<documentation>With GeoSon : property name to use to set the colour</documentation>
+		</parameter>
+		<parameter member="property_lightness_list"
+			to="floatarray"
+			default="floatarray()"
+			from="floatarray"
+			name="symbol_property_lightness_list"
+			visible='off'>
+			<documentation>With GeoSon : list of colours to use</documentation>
+		</parameter>
+		<parameter member="property_lightness_values_list"
+			to="floatarray"
+			default="floatarray()"
+			from="floatarray"
+			name="symbol_property_lightness_values_list"
+			visible='off'>
+			<documentation>With GeoSon : list of heights to use</documentation>
+		</parameter>
+
+		<parameter member="property_saturation_value"
+			to="float"
+			default="1"
+			from="float"
+			name="symbol_property_saturation_value"
+			visible='off'>
+			<documentation>With GeoSon : list of colours to use</documentation>
+		</parameter>
+
 		<parameter member="property_height_name"
 			to="string"
 			default="colour"
diff --git a/src/visualisers/SymbolPlotting.cc b/src/visualisers/SymbolPlotting.cc
index cd16b58d..ff6d4bca 100644
--- a/src/visualisers/SymbolPlotting.cc
+++ b/src/visualisers/SymbolPlotting.cc
@@ -164,6 +164,32 @@ void SymbolPlotting::by_property(Data& data, BasicGraphicsObjectContainer& out)
         property_lightness_list_.push_back(0.5);
 
 
+    IntervalMap<float> hueFinder;
+    auto value_hue = property_hue_values_list_.begin();
+    auto hue = property_hue_list_.begin();
+    IntervalMap<float> lightnessFinder;
+    auto value_lightness = property_lightness_values_list_.begin();
+    auto lightness = property_lightness_list_.begin();
+
+    while (true) {
+        if (value_hue + 1 == property_hue_values_list_.end())
+            break;
+        
+        hueFinder[Interval(*value_hue, *(value_hue+1))] = *hue;        
+        if (hue + 1 != property_hue_list_.end())
+            hue++;
+        ++value_hue;
+    }
+    while (true) {
+        if (value_lightness + 1 == property_lightness_values_list_.end())
+            break;
+        
+        lightnessFinder[Interval(*value_lightness, *(value_lightness+1))] = *lightness;        
+        if (lightness + 1 != property_lightness_list_.end())
+            lightness++;
+        ++value_lightness;
+    }
+
     IntervalMap<float> hueFinder;
     IntervalMap<float> lightnessFinder;
     
@@ -194,7 +220,6 @@ void SymbolPlotting::by_property(Data& data, BasicGraphicsObjectContainer& out)
        
         Hsl hsl(hueFinder.find(hue, 0),  property_saturation_value_, lightnessFinder.find(lightness, 0.5));
         Colour colour(hsl);
-        cout << colour << endl;
         symbol->setColour(colour);