.inverted-bar {
    position: relative;
}

.inverted-bar:before,
.inverted-bar:after {
    padding: 10px 0;
    text-indent: 10px;
    position: absolute;
    white-space: nowrap;
    overflow: hidden;
    content: attr(data-content);
}

.inverted-bar:before {
    background-color: aqua;
    color: red;
    width: 100%;
}

.inverted-bar:after {
    background-color: red;
    color: aqua;
    width: 20%;
}

<div class="inverted-bar" data-content="Lorem ipsum dolor sit amet"></div>