<style>
    span.magic {
        font-weight: bold;
        font-size: larger;
        color: #e84545;
        animation: 3s linear 0s infinite normal both running magic;
    }

    @keyframes magic {
        0% { color: #e84545; }
        33% { color: #45e845; }
        66% {color: #4545e8; }
    }
</style>
<ol>
    <li>
        <a href="#">
            <span class="magic">Week 7 (TBD): E-Waste Meetup</span>
        </a>
    </li>
</ol>