diff --git a/src/charttheme.cpp b/src/charttheme.cpp
index 8c091f9..892fb75 100644
--- a/src/charttheme.cpp
+++ b/src/charttheme.cpp
@@ -93,20 +93,30 @@ void ChartTheme::decorate(QLegend* legend)
 
 void ChartTheme::decorate(QAreaSeries* series, int index)
 {
-    QPen pen(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1.0));
-    pen.setWidthF(2);
-    series->setPen(pen);
+    QPen pen;
+    QBrush brush;
 
-    QBrush brush(m_seriesColors.at(index % m_seriesColors.size()));
-    series->setBrush(brush);
+    if (pen == series->pen()){
+        pen.setColor(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1.0));
+        pen.setWidthF(2);
+        series->setPen(pen);
+    }
+
+    if (brush == series->brush()) {
+       QBrush brush(m_seriesColors.at(index % m_seriesColors.size()));
+       series->setBrush(brush);
+    }
 }
 
 
 void ChartTheme::decorate(QLineSeries* series,int index)
 {
-    QPen pen(m_seriesColors.at(index%m_seriesColors.size()));
-    pen.setWidthF(2);
-    series->setPen(pen);
+    QPen pen;
+    if(pen == series->pen()){
+        pen.setColor(m_seriesColors.at(index%m_seriesColors.size()));
+        pen.setWidthF(2);
+        series->setPen(pen);
+    }
 }
 
 void ChartTheme::decorate(QBarSeries* series,int index)
@@ -171,12 +181,20 @@ void ChartTheme::decorate(QPercentBarSeries* series,int index)
 
 void ChartTheme::decorate(QScatterSeries* series, int index)
 {
-    QPen pen(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1.0));
-    pen.setWidthF(2);
-    series->setPen(pen);
 
-    QBrush brush(m_seriesColors.at(index % m_seriesColors.size()));
-    series->setBrush(brush);
+    QPen pen;
+    QBrush brush;
+
+    if (pen == series->pen()) {
+        pen.setColor(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1.0));
+        pen.setWidthF(2);
+        series->setPen(pen);
+    }
+
+    if (brush == series->brush()) {
+        QBrush brush(m_seriesColors.at(index % m_seriesColors.size()));
+        series->setBrush(brush);
+    }
 }
 
 void ChartTheme::decorate(QPieSeries* series, int index)
@@ -193,9 +211,12 @@ void ChartTheme::decorate(QPieSeries* series, int index)
 
 void ChartTheme::decorate(QSplineSeries* series, int index)
 {
-    QPen pen(m_seriesColors.at(index%m_seriesColors.size()));
-    pen.setWidthF(2);
-    series->setPen(pen);
+    QPen pen;
+    if(pen == series->pen()){
+        pen.setColor(m_seriesColors.at(index%m_seriesColors.size()));
+        pen.setWidthF(2);
+        series->setPen(pen);
+    }
 }
 
 void ChartTheme::decorate(QChartAxis* axis,bool axisX)