Created from the comment in RT-32229:

The following behaves differently:

.root {
    -fx-background: #f8f8f8;
    -fx-selection-bar: linear-gradient(to top, derive(-fx-background, -2%) 0%, derive(-fx-background, 50%) 100%);
}

throws an error/warning (IllegalArgumentException) in JavaFX 8.

while the following does not:

.root {
    -fx-selection-bar: linear-gradient(to top, derive(#f8f8f8, -2%) 0%, derive(#f8f8f8, 50%) 100%);
}

They should behave the same, though.

In JavaFX 2.2 the first results in a light blue, while the second one results in a gray selection color.


Here's a sample code (select the table row or the menu):

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;


public class TestApp5 extends Application {
    public static void main(String[] args) {
        launch();
    }
    @Override
    public void start(Stage stage) throws Exception {
        MenuBar menuBar = new MenuBar();
        Menu menu = new Menu("Menu");
        menu.getItems().add(new MenuItem("test"));
        menuBar.getMenus().add(menu);
        TableView<String> tableView = new TableView<String>();
        tableView.setItems(FXCollections.observableArrayList("String"));
        TableColumn<String, String> tableColumn = new TableColumn<String, String>();
        tableColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<String, String>, ObservableValue<String>>() {
            @Override
            public ObservableValue<String> call(TableColumn.CellDataFeatures<String, String> stringStringCellDataFeatures) {

                return new SimpleStringProperty(stringStringCellDataFeatures.getValue());
            }
        });
        tableView.getColumns().add(tableColumn);
        VBox vBox = new VBox();
        vBox.getChildren().add(menuBar);
        vBox.getChildren().add(tableView);
        Scene scene = new Scene(vBox);
        scene.getStylesheets().add("/style.css");
        stage.setScene(scene);
        stage.show();
    }
}