diff --git a/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/.ratings b/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/.ratings
index 372dcf0dcf8417710d6eeca1f93102852c1351b8..b5e34a048324998476890ec6a11cfc00332f6a29 100644
--- a/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/.ratings
+++ b/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/.ratings
@@ -1,7 +1,7 @@
 DynamicTextFieldTreeTableCell.java de24117e6f785b328f1ff62383626a0b4b54e8ff YELLOW
 DynamicTreeContentProviderBase.java 6760a6dc5721175b1dada8f30fd9da05f7bcc4b3 GREEN
 DynamicTreeItem.java 75dc5534b119ffdb3c10a65810c2a0f330b7955e GREEN
-DynamicTreeTableUIProviderBase.java 2c4886a5ecd7dc06c281e63c00c4e3499e5d8f28 YELLOW
+DynamicTreeTableUIProviderBase.java dba6edaebf9e56067d80b51564379dd05697f830 YELLOW
 DynamicTreeTableViewer.java 3d91b1bd43393f5d0733a253a85436b8255526ae YELLOW
 DynamicTreeUIProviderBase.java e9b68607683de279d0cb8712a28dc131c5c33ece GREEN
 DynamicTreeViewer.java 725f41f4fb4b6bfa813f010fb9083ab02eea164a GREEN
diff --git a/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/DynamicTreeTableUIProviderBase.java b/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/DynamicTreeTableUIProviderBase.java
index 2c4886a5ecd7dc06c281e63c00c4e3499e5d8f28..dba6edaebf9e56067d80b51564379dd05697f830 100644
--- a/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/DynamicTreeTableUIProviderBase.java
+++ b/org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/DynamicTreeTableUIProviderBase.java
@@ -69,32 +69,6 @@ public abstract class DynamicTreeTableUIProviderBase<T> {
 		return null;
 	}
 
-	/**
-	 * Sets styling properties as background color for the given cell.
-	 * 
-	 * This method is not intended to be overwritten. Instead there are getters as
-	 * {@link #getBackgroundColor(int, Object)}.
-	 * 
-	 * @param cell
-	 *            The cell to be layouted.
-	 * @param columnIndex
-	 *            The number of the column in which this cell is contained in.
-	 */
-	private final void styleCell(TreeTableCell<T, ?> cell, int columnIndex) {
-		if(cell.getTreeTableRow() != null) {
-			T data = cell.getTreeTableRow().getItem();
-
-			if(data != null) {
-				Color bgColor = getBackgroundColor(columnIndex, data);
-				if(bgColor != null) {
-					double alpha = 0.5;
-					String colorStr = colorToRgbaString(bgColor, alpha);
-					cell.setStyle("-fx-background-color: " + colorStr);
-				}
-			}
-		}
-	}
-
 	/**
 	 * Determines the background color for a given element in the specified column.
 	 * 
@@ -277,6 +251,41 @@ public abstract class DynamicTreeTableUIProviderBase<T> {
 				createEditableComboCellFactory(columnIndex, column, comboValueFactory));
 	}
 
+	/**
+	 * Sets styling properties as background color for the given cell.
+	 * 
+	 * This method is not intended to be overwritten. Instead there are getters as
+	 * {@link #getBackgroundColor(int, Object)}.
+	 * 
+	 * @param cell
+	 *            The cell to be layouted.
+	 * @param columnIndex
+	 *            The number of the column in which this cell is contained in.
+	 */
+	private final void styleCell(TreeTableCell<T, ?> cell, int columnIndex) {
+		if(cell.getTreeTableRow() != null) {
+			T data = cell.getTreeTableRow().getItem();
+
+			if(data != null) {
+				Color bgColor = getBackgroundColor(columnIndex, data);
+				if(bgColor != null) {
+					// Some transparency is necessary here, for correctly displaying the selection
+					// bar when selecting a row. WIth out transparency, it would not be visible on
+					// this cell.
+					double alpha = 0.5;
+					String colorStr = colorToRgbaString(bgColor, alpha);
+					cell.setStyle("-fx-background-color: " + colorStr);
+				}
+			}
+		}
+	}
+
+	/** Converts a {@link Color} object into a rgba format as used in css. */
+	private final static String colorToRgbaString(Color color, double alpha) {
+		return String.format("rgba(%d,%d,%d,%.1f)", (int)(color.getRed() * 255),
+				(int)(color.getGreen() * 255), (int)(color.getBlue() * 255), alpha);
+	}
+
 	/** Creates a cell factory for editable cells. */
 	private Callback<TreeTableColumn<T, String>, TreeTableCell<T, String>>
 			createEditableCellFactory(int colIndex) {
@@ -461,12 +470,6 @@ public abstract class DynamicTreeTableUIProviderBase<T> {
 		};
 	}
 
-	/** Converts a {@link Color} object into a rgba format as used in css. */
-	private final static String colorToRgbaString(Color color, double alpha) {
-		return String.format("rgba(%d,%d,%d,%.1f)", (int)(color.getRed() * 255),
-				(int)(color.getGreen() * 255), (int)(color.getBlue() * 255), alpha);
-	}
-
 	/**
 	 * Applies this UIProvider to configure the given {@link TreeTableColumn}.
 	 *