undo.css

body {
    font-family: Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #696969;
}
h1, h2, h3, h4, h5, h6 {
    color: inherit;
    font-family: inherit;
}
.navbar {
    font-family: inherit;
}
.navbar-default .navbar-nav>li>a, .navbar-default .navbar-text, .navbar-default .dropdown-menu>li>a, .navbar-default .dropdown-menu>li>a:focus, .navbar-inverse .dropdown-menu>li>a, .navbar-inverse .dropdown-menu>li>a:focus {
    color: #fff;
}
a {
    color: #1771cb;
}
.btn-primary {
    background-color: #375a7f;
}
.group-member, .group-member a {
    color: #000;
}
span[style="font-size:32px;color:#0000ff;"] {
    display: none;
}

undo.js

document.getElementsByTagName('HEAD')[0].getElementsByTagName('STYLE')[0].remove();