Updated default BlueEnhanceParameter in Towsey.Acoustic.yml

Now the default indices rendering code will match the default LDFC spectrograms rendering code

src/AnalysisConfigFiles/Towsey.Acoustic.yml

@@ -121,6 +121,13 @@ LdSpectrogramConfig:
     #    When filterCoeff =-1.0, small values are maximally de-emphasized, i.e. y=x^2.
     #    Generally usage suggests that a value of -0.25 is suitable. i.e. a slight de-emphasis.
     ColourFilter: -0.25
+
+    # The third index in the color map is always mapped to blue. The eye is less sensitive to blue and it can be difficult to see in dark background.
+    # Therefore we enhance the blue by making it brighter, but only when the red and green values are low.
+    # This could be done better but can be a helpful! The intention is to create a more visible light blue color.
+    # The default value for BlueEnhanceParameter = 0.0 i.e. do no enhancement.
+    # Suggested value is 0.4 when want to enhance visualisation of the "blue" index. 
+    BlueEnhanceParameter: 0.4
 
     # minutes x-axis scale
     XAxisTicIntervalSeconds: 3600