gridData.horizontalSpan = 2;
gridData.heightHint = 150;
gridData.widthHint = 175;
paletteTable.getControl().setLayoutData(gridData);
paletteTable.setLabelProvider(new BrewerPaletteLabelProvider());
paletteTable.setContentProvider(new BrewerPaletteContentProvider(this));
paletteTable.addFilter(new BrewerPaletteViewerFilter(this));
paletteTable.setSorter(new BrewerPaletteViewerSorter());