Saturate colors some more and use color selection from base class

The original colors were hard to discern from the background on certain
devices.

Change-Id: I276f2cd76e0a1be40040bf5a0557a288d10d37d9
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

plugins/qmlprofilerextension/pixmapcachemodel.cpp

@@ -90,10 +90,9 @@ QColor PixmapCacheModel::getColor(int index) const
 {
     Q_D(const PixmapCacheModel);
     if (d->range(index).pixmapEventType == PixmapCacheCountChanged)
-        return QColor::fromHsl(240, 76, 166);
+        return getColorByHue(PixmapCacheCountHue);
 
-    int ndx = getEventId(index);
-    return QColor::fromHsl((ndx*25)%360, 76, 166);
+    return getEventColor(index);
 }
 
 float PixmapCacheModel::getHeight(int index) const

plugins/qmlprofilerextension/pixmapcachemodel.h

@@ -71,6 +71,8 @@ public:
     void clear();
 
 private:
+    static const int PixmapCacheCountHue = 240;
+
     class PixmapCacheModelPrivate;
     Q_DECLARE_PRIVATE(PixmapCacheModel)
 };

plugins/qmlprofilerextension/scenegraphtimelinemodel.cpp

@@ -103,7 +103,7 @@ QColor SceneGraphTimelineModel::getColor(int index) const
     double fpsFraction = 1 / (eventDuration * 60.0);
     if (fpsFraction > 1.0)
         fpsFraction = 1.0;
-    return QColor::fromHsl((fpsFraction*96)+10, 76, 166);
+    return getFractionColor(fpsFraction);
 }
 
 QString labelForSGType(int t)