li.earthquake_red {
    list-style-type: square;
    color: red;
}
li.earthquake_orange {
    list-style-type: square;
    color: orange;
}
li.earthquake_yellow {
    list-style-type: square;
    color: yellow;
}
li.earthquake_green {
    list-style-type: square;
    color: green;
}
li.earthquake_unknown {
    list-style-type: square;
    color: grey;
}