colTitle.setText(Messages.StyleEditor_theme_column_label);
TreeColumn colExpr = new TreeColumn(treeTable, SWT.LEFT);
colExpr.setText(Messages.StyleEditor_theme_column_expression);
treeTable.layout();
tableSettings = new TableSettings(treeTable);
tableSettings.setColumnMin(0, 40);
tableSettings.setColumnMin(1, 100);
tableSettings.setColumnMin(0, 50);