a[href ^= "http"]:not([href*="//sleepdata.org"]) {
  color: #f0ad4e;
  border-color: #eea236;
}

a[href ^= "http"]:not([href*="//sleepdata.org"]):hover {
  color: #ed9c28;
  border-color: #d58512;
}


a[href ^= "http"]:not([href*="//sleepdata.org"]):after {
  /*content: ' »';*/
}

a[href ^= "http"]:not([href*="//sleepdata.org"]) {
  color: #5bc0de;
  border-color: #46b8da;
}

a[href ^= "http"]:not([href*="//sleepdata.org"]):hover {
  color: #31b0d5;
  border-color: #269abc;
}

Use a less bright color for external links
Use a less bright color for external links
