How to paint tablaview cell when clicking javafx

 package controller;

import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.util.Callback;
import model.TableRow;

import java.net.URL;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.ResourceBundle;


/**
 * Created by Michael
 */
public class CalendarController implements Initializable {

@FXML
TableView<TableRow> tvCalendary;

private int cont_aListDate = -1;

@Override
public void initialize(URL location, ResourceBundle resources) {
    addFilestoTable();
}

DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd/MM/YYYY");


private void addFilestoTable() {


    TableColumn<model.TableRow, String> t1 = new TableColumn<>("Monday");
    t1.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateMonday"));

    TableColumn<model.TableRow, String> t2 = new TableColumn<>("Tuesday");
    t2.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateTuesday"));

    TableColumn<model.TableRow, String> t3 = new TableColumn<>("Wednesday");
    t3.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateWednesday"));

    TableColumn<model.TableRow, String> t4 = new TableColumn<>("ThursDay");
    t4.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateThursDay"));

    TableColumn<model.TableRow, String> t5 = new TableColumn<>("Friday");
    t5.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateFriday"));

    TableColumn<model.TableRow, String> t6 = new TableColumn<>("Saturday");
    t6.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateSaturday"));

    TableColumn<model.TableRow, String> t7 = new TableColumn<>("Sunday");
    t7.setCellValueFactory(new PropertyValueFactory<TableRow, String>("dateSunday"));

    tvCalendary.getSelectionModel().setCellSelectionEnabled(true);
    tvCalendary.getColumns().addAll(t1, t2, t3, t4, t5, t6, t7);
    rellenarTableView();

}


/**
 * rellenar table
 */
private void rellenarTableView() {

    int contWeeksReg = 0;

    System.out.println("numero de semanas : " + RankController.getContWeeks());

    if (!RankController.getFirstDay().equals("MONDAY")) {
        incompletWeekRegistred();
        cont_aListDate--;
        contWeeksReg++;
    }

    for (; contWeeksReg < RankController.getContWeeks() - 1 ; contWeeksReg++) {
        completWeekRegistred();
    }

    endWeekRegistred();

}

/**
 * end Week Registred
 */
private void endWeekRegistred() {

    ArrayList<String> dates = new ArrayList<>();
    int cont = -1;

    do {

        dates.add(String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)));

    } while (!RankController.getaListRankDates().get(cont_aListDate)
            .isAfter(RankController.getEndDay().minusDays(1)));

    int aux = 7 - dates.size();
    for (int i = 0; i < aux; i++) {
        dates.add("");
    }

    TableRow tb = new TableRow(dates.get(++cont), dates.get(++cont), dates.get(++cont), dates.get(++cont),
            dates.get(++cont), dates.get(++cont), dates.get(++cont));

    tvCalendary.getItems().add(tb);
}

/**
 * week Registred
 */
private void completWeekRegistred() {

    TableRow tb = new TableRow(
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter)),
            String.valueOf(RankController.getaListRankDates().get(++cont_aListDate).format(formatter))
    );

    tvCalendary.getItems().add(tb);
}

/**
 * incompletWeekRegistred()
 */
private void incompletWeekRegistred() {

    ArrayList<String> dates = new ArrayList<>();

     while (!String.valueOf(RankController.getaListRankDates().get(++cont_aListDate)
            .getDayOfWeek()).equals("MONDAY")) {
        dates.add(String.valueOf(RankController.getaListRankDates().get(cont_aListDate).format(formatter)));
    }

    TableRow tb = new TableRow();
    tb.completeWeek(RankController.getFirstDay(), dates);
    tvCalendary.getItems().add(tb);

}

@FXML
public void clickItem(MouseEvent event) {

    if (event.getClickCount() == 2) {

        System.out.println(tvCalendary.getSelectionModel().getSelectedCells());



//            new TableCell<TableRow, String>().setStyle("-fx-background-color: red");

        }
    }
}