I am using the ButtonToolBar react component with three buttons. I want only the clicked button to change colour but nothing happens when the button is clicked. This is my code below:

'''

<ButtonToolbar>
    <Button
        id="todayButton"
        appearance="ghost"
        onClick={this.handleTodayButtonClick}
        name="todayButton"
    >
        Today
    </Button>
    <Button
        id = "weekButton"
        appearance="ghost"
        onClick={this.handleWeekButtonClick}
        name="weekButton"
    >
        This Week
    </Button>
    <Button
        id = "monthButton"
        appearance="ghost"
        onClick={this.handleMonthButtonClick}
        name="monthButton"
    >
        This Month
    </Button>
</ButtonToolbar>

'''