gnu-social/public/assets/css/profilecolor/profilecolor.css

.pcolor {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
}

.profile-color {
    width: 100%;
    height: 100%;
    background-color: transparent;
    box-sizing: border-box;
    border: 5px solid;
}