user-style.css

@-moz-document domain("echojs.com") {
  * {
    color: #93A1A1 !important;
    background-color: #002b36 !important;
  }
  header, header *, #sitenews, #sitenews *, footer, footer *, #comments article, #comments article * {
    background-color: #073642 !important;
  }
  header a:hover, #sitenews a:hover, footer a:hover {
    background: #002b36 !important;
  }
  header, footer {
    border: none;
  }
  code, pre, input, textarea {
    background: #073642 !important;
  }
  a {
    color: #2aa198 !important;
  }
  .subtext a {
    color: #93A1A1 !important;
  }
  a:visited, a:visited span {
    color: #b58900 !important;
  }
  a:hover, a:hover span {
    background: #073642 !important;
  }
}