.date-container-days div.dow {
    color: #333 !important;
    font-weight: bold;
}

    .date-container-days div.dow:first-child {
        color: rgb(231, 20, 16) !important;
    }

    .date-container-days div.dow:nth-child(7) {
        color: rgba(0, 91, 171) !important;
    }

.date-container-days div.day.weekend {
    color: rgb(231, 20, 16);
}

.date-container-days div.day:nth-child(7n) {
    color: rgba(0, 91, 171);
}

.date-container-days div.day.old.weekend,
.date-container-days div.day.new.weekend {
    color: #00000060;
}