Hide button of DateTimePicker

[enchev]

You can target using CSS any specify DatePicker by id:

You can also use DateRender event to style desired date:

    void DateRenderNoWeekends(DateRenderEventArgs args)
    {
        if (args.Date.Date == DateTime.Today)
        { 
            args.Attributes.Add("style", "background-color: red;");
        }
    }