diff --git a/src/barchart/bargroup.cpp b/src/barchart/bargroup.cpp
index f372dcd..88eab42 100644
--- a/src/barchart/bargroup.cpp
+++ b/src/barchart/bargroup.cpp
@@ -48,6 +48,11 @@ int BarGroup::addColor( QColor color )
     return colorIndex;
 }
 
+void BarGroup::resetColors()
+{
+    mColors.clear();
+}
+
 void BarGroup::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     if (!mLayoutSet) {
diff --git a/src/barchart/bargroup.h b/src/barchart/bargroup.h
index 48e94ee..808ad8f 100644
--- a/src/barchart/bargroup.h
+++ b/src/barchart/bargroup.h
@@ -37,8 +37,8 @@ public:
     void setPos(qreal x, qreal y);
     void setBarWidth( int w );          // Default width for each bar
 
-    // TODO: set color theme instead? or use some external color theme call this
     int addColor( QColor color );
+    void resetColors();
 
     // From QGraphicsItem
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);