healthchecks/static/css/channel_checks.css

.channel-checks-table td:first-child, .channel-checks-table th:first-child {
    padding-left: 16px;
}

.channel-checks-table .check-all-cell {
    background: #EEE;
}

.channel-checks-table .unnamed {
    color: #999;
    font-style: italic;
}