Fix LTM Plot Legend Colors in Compare

.. they were always black which wasn't good on a
   dark background !

src/LTMPlot.cpp

@@ -2173,6 +2173,9 @@ LTMPlot::setCompareData(LTMSettings *set)
     // now refresh
     updateLegend();
 
+    // update colours etc for plot chrome
+    configUpdate();
+
     // plot
     replot();
 

src/PDModel.cpp

@@ -488,7 +488,7 @@ ExtendedModel::ExtendedModel(Context *context) :
     anI2=300;
     aeI1=600;
     aeI2=3000;
-    laeI1=4000;
+    laeI1=3600;
     laeI2=30000;
 
     connect (this, SIGNAL(dataChanged()), this, SLOT(onDataChanged()));