configRegistry = new ConfigRegistry();

...
//BODYSTACK
dataProvider = getWrappedIDataProvider(filteredBodyDataProvider);
// 1.
layerCompositeAll = new CompositeLayerMine(dataProvider); //using a concrete Layer here - works. Using a CompositeLayer everything I register in configRegistry 
// 2.
columnReorderLayer = new ColumnReorderLayer(layerCompositeAll);
// 3. can disable some columns
columnHideShowLayer = new ColumnHideShowLayer(columnReorderLayer);
// 4. can handle selection
selectionLayer = new SelectionLayer(columnHideShowLayer);
// 5.
viewportLayer = new ViewportLayer(selectionLayer);
...


// add new Labels and CellRenderer
cellLabelAccumulator.registerColumnOverrides(columnNumber, customColumnLabel);
configRegistry.registerConfigAttribute(CellConfigAttributes.CELL_PAINTER, cellRenderer, DisplayMode.NORMAL,	customColumnLabel);


...

//NATTABLE

gridLayer = new GridLayer(bodyStack.viewportLayer, columnHeaderLayer, rowHeaderLayer, cornerLayer, false);
natTable = new NatTable(parent, gridLayer, false);
natTable.setConfigRegistry(configRegistry);

    /*
     * Necessary, because otherwise the labels, registered to this compositeLayer - are not
     * propagated to the child layers! As the result the cellPainters, celleditos etc. are not used.
     */
    @Override
    public void setConfigLabelAccumulator(IConfigLabelAccumulator cellLabelAccumulator) {
        super.setConfigLabelAccumulator(cellLabelAccumulator);
        this.layerNewObjectsTop.setConfigLabelAccumulator(cellLabelAccumulator);
        this.layerExistingObjectsSecond.setConfigLabelAccumulator(cellLabelAccumulator);
    }