.bootstrap-datetimepicker-widget table td.old {
    color: #333333;
}

.bootstrap-datetimepicker-widget table td.day {
  color: black;
}
  
.bootstrap-datetimepicker-widget table thead tr:first-child th {
  color: black;
}

.bootstrap-datetimepicker-widget .timepicker-hour, 
.bootstrap-datetimepicker-widget .timepicker-minute, 
.bootstrap-datetimepicker-widget .timepicker-second {
  color: #333333;
}