kahuna/public/js/components/gr-archiver-status/gr-archiver-status.css

.gr-archiver-status--archived {
    color: #ccc;
    fill: #ccc; /* svg icons */
}

.gr-archiver-status--unarchived {
    color: #666;
    fill: #666; /* svg icons */
}

.gr-archiver-status--interactive:hover {
    color: white;
    fill: white; /* svg icons */
}

.gr-archiver-status--archived gr-library-added-icon,
.gr-archiver-status--archived:hover gr-library-remove-icon {
    display: inline;
}

.gr-archiver-status--archived:hover gr-library-added-icon,
.gr-archiver-status--archived gr-library-remove-icon {
    display: none;
}

/* undo disabled button styling */
.gr-archiver-status__button[disabled] {
    background-color: transparent;
    box-shadow: none;
}

.gr-archiver-status__icon svg {
    /* odd one, but the only one that seems to do the trick ;_; */
    vertical-align: middle;
}