message: Change `highest-rated-comment` color to green instead of orange
  + fix style
diff: .rgh-highest-rated-comment {
  - border: 2px solid #ffa500 !important;
  + border: 2px solid #2cbe4e !important;
  +}
  +
  +.rgh-highest-rated-comment.timeline-comment--caret::before {
  + border-right-color: #2cbe4e;
  +}
  +
  +.rgh-highest-rated-comment.timeline-comment--caret::after {
  + border-width: 5px;
  + margin-left: 6px;
  + margin-top: 3px;
  }
  a.rgh-highest-rated-comment .timeline-comment-header-text {
  