Kanboard-Prod/assets/css/src/task_date.css

.task-date {
    font-weight: 500;
    color: #000
}

span.task-date-today {
    opacity: 1.0;
    color: var(--link-color-primary);
}

span.task-date-overdue {
    opacity: 1.0;
    color: #b94a48
}