diff --git a/src/barchart/bar.cpp b/src/barchart/bar.cpp
index ef304a8..ed36d0e 100644
--- a/src/barchart/bar.cpp
+++ b/src/barchart/bar.cpp
@@ -20,7 +20,7 @@ void Bar::setPlotDomain(const PlotDomain& data)
     mPlotDomain = data;
 }
 
-void Bar::resize( int w, int h )
+void Bar::resize( qreal w, qreal h )
 {
 //    qDebug() << "bar::resize" << w << h;
     mWidth = w;
@@ -46,7 +46,15 @@ void Bar::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidg
     // TODO: accept brush instead of color
     QBrush brush(mColor);
     painter->setBrush(brush);
-    painter->drawRect(mXpos-mWidth, mYpos-mHeight ,mWidth ,mHeight); // Evil inverse rect, because we want bars to grow from bottom to top :)
+
+    // This compensates for rounding errors. drawRect takes ints and cumulative error of pos + size may be over 1.
+    int x0 = mXpos;
+    int x1 = (mXpos + mWidth);
+    int w = x1-x0;
+    int y0 = mYpos;
+    int y1 = (mYpos + mHeight);
+    int h = y1-y0;
+    painter->drawRect(x0, y0 ,w ,h);
 }
 
 QRectF Bar::boundingRect() const
diff --git a/src/barchart/bar.h b/src/barchart/bar.h
index d5fc43c..7a8e956 100644
--- a/src/barchart/bar.h
+++ b/src/barchart/bar.h
@@ -13,12 +13,12 @@ class Bar : public ChartItem
 public:
     Bar(QGraphicsItem *parent=0);
 
-public: // from ChartItemControl
+public: // from ChartItem
     void setSize(const QSize &size);
     void setPlotDomain(const PlotDomain& data);
 
     // Layout Stuff
-    void resize( int w, int h );       // Size of bar. in screen coordinates.
+    void resize( qreal w, qreal h );   // Size of bar.
     void setColor( QColor col );       // Color of bar
     void setPos(qreal x, qreal y);
 
@@ -30,8 +30,8 @@ public:
 
 private:
 
-    int mHeight;
-    int mWidth;
+    qreal mHeight;
+    qreal mWidth;
     qreal mXpos;
     qreal mYpos;
     QColor mColor;
diff --git a/src/barchart/bargroup.cpp b/src/barchart/bargroup.cpp
index 9aefa45..113e498 100644
--- a/src/barchart/bargroup.cpp
+++ b/src/barchart/bargroup.cpp
@@ -119,6 +119,7 @@ void BarGroup::layoutChanged()
     int itemIndex(0);
     for (int column=0; column < columnCount; column++) {
         qreal xPos = xStepPerSeries * column + ((tW + mBarDefaultWidth*rowCount)/(columnCount*2));
+        qreal yPos = mHeight;
         for (int row = 0; row < rowCount; row++) {
             qreal barHeight = mSeries.valueAt(row, column) * scale;
             Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
@@ -126,7 +127,7 @@ void BarGroup::layoutChanged()
             // TODO: width settable per bar?
             bar->resize(mBarDefaultWidth, barHeight);
             bar->setColor(mColors.at(row));
-            bar->setPos(xPos, mHeight); // item*posStep+startPos + series * mBarDefaultWidth, mHeight);
+            bar->setPos(xPos, yPos-barHeight); // item*posStep+startPos + series * mBarDefaultWidth, mHeight);
             itemIndex++;
             xPos += mBarDefaultWidth;
         }
diff --git a/src/barchart/percentbargroup.cpp b/src/barchart/percentbargroup.cpp
index 72ec026..3d1347e 100644
--- a/src/barchart/percentbargroup.cpp
+++ b/src/barchart/percentbargroup.cpp
@@ -121,7 +121,7 @@ void PercentBarGroup::layoutChanged()
             // TODO: width settable per bar?
             bar->resize(mBarDefaultWidth, barHeight);
             bar->setColor(mColors.at(row));
-            bar->setPos(xPos, yPos);
+            bar->setPos(xPos, yPos-barHeight);
             itemIndex++;
             yPos -= barHeight;
         }
diff --git a/src/barchart/stackedbargroup.cpp b/src/barchart/stackedbargroup.cpp
index 37d5835..995f229 100644
--- a/src/barchart/stackedbargroup.cpp
+++ b/src/barchart/stackedbargroup.cpp
@@ -10,6 +10,7 @@ StackedBarGroup::StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *p
   ,mLayoutSet(false)
   ,mLayoutDirty(true)
   ,mBarDefaultWidth(20) // TODO: remove hard coding, when we have layout code ready
+  ,mTheme(0)
 {
     dataChanged();
 }
@@ -30,6 +31,11 @@ void StackedBarGroup::setPlotDomain(const PlotDomain& data)
     // TODO:
 }
 
+void StackedBarGroup::themeChanged(ChartTheme *theme)
+{
+    mTheme = theme;
+}
+
 void StackedBarGroup::setBarWidth( int w )
 {
     mBarDefaultWidth = w;
@@ -111,7 +117,7 @@ void StackedBarGroup::layoutChanged()
     qreal tW = mWidth;
     qreal tC = count+1;
     qreal xStep = (tW/tC);
-    qreal xPos = ((tW/tC) + mBarDefaultWidth / 2);
+    qreal xPos = ((tW/tC) - mBarDefaultWidth / 2);
 
     for (int column = 0; column < mSeries.countColumns(); column++) {
         qreal yPos = h;
@@ -120,9 +126,11 @@ void StackedBarGroup::layoutChanged()
             Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
 
             // TODO: width settable per bar?
+            // TODO: how to get color for series(x) from theme?
+//            mTheme->themeForSeries();
             bar->resize(mBarDefaultWidth, barHeight);
             bar->setColor(mColors.at(row));
-            bar->setPos(xPos, yPos);
+            bar->setPos(xPos, yPos-barHeight);
             itemIndex++;
             yPos -= barHeight;
         }
diff --git a/src/barchart/stackedbargroup.h b/src/barchart/stackedbargroup.h
index c485a00..804b917 100644
--- a/src/barchart/stackedbargroup.h
+++ b/src/barchart/stackedbargroup.h
@@ -1,6 +1,7 @@
 #ifndef STACKEDBARGROUP_H
 #define STACKEDBARGROUP_H
 
+#include "charttheme_p.h"
 #include "chartitem_p.h"
 #include "bar.h"
 #include "stackedbarchartseries.h"
@@ -9,7 +10,7 @@
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 // TODO: derive this from ChartObjectInterface, when setSize is back in ChartItem
-class StackedBarGroup : public ChartItem
+class StackedBarGroup : public ChartItem, public ChartThemeObserver
 {
 public:
     StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *parent = 0);
@@ -18,6 +19,9 @@ public: // From ChartItem
     void setSize(const QSize &size);
     void setPlotDomain(const PlotDomain& data);
 
+    // From ChartThemeObserver
+    void themeChanged(ChartTheme *theme);
+
 public: // Layout "api"
     void setPos(qreal x, qreal y);
     void setBarWidth( int w );          // Default width for each bar
@@ -50,6 +54,8 @@ private:
 
     QList<QColor> mColors;  // List of colors for series for now
 
+    ChartTheme* mTheme;
+
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE