.facetwp-color {
    display: inline-block;
    margin: 0 12px 12px 0;
    box-shadow: 1px 2px 3px #ccc;
    width: 30px;
    height: 30px;
    cursor: pointer;
}

.facetwp-color.facetwp-hidden {
    display: none;
}

.facetwp-color.checked::after {
    content: '';
    position: absolute;
    border: 2px solid #fff;
    border-top: 0;
    border-right: 0;
    width: 16px;
    height: 6px;
    transform: rotate(-45deg);
    -webkit-transform: rotate(-45deg);
    margin: 8px 0 0 6px;
}