plugins/codemirror/addon/tern/tern.css

.CodeMirror-Tern-completion {
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}
.CodeMirror-Tern-completion:before {
  position: absolute;
  left: 2px;
  bottom: 2px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: bold;
  height: 15px;
  width: 15px;
  line-height: 16px;
  text-align: center;
  color: white;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
.CodeMirror-Tern-completion-unknown:before {
  content: "?";
  background: #4bb;
}
.CodeMirror-Tern-completion-object:before {
  content: "O";
  background: #77c;
}
.CodeMirror-Tern-completion-fn:before {
  content: "F";
  background: #7c7;
}
.CodeMirror-Tern-completion-array:before {
  content: "A";
  background: #c66;
}
.CodeMirror-Tern-completion-number:before {
  content: "1";
  background: #999;
}
.CodeMirror-Tern-completion-string:before {
  content: "S";
  background: #999;
}
.CodeMirror-Tern-completion-bool:before {
  content: "B";
  background: #999;
}

.CodeMirror-Tern-completion-guess {
  color: #999;
}

.CodeMirror-Tern-tooltip {
  border: 1px solid silver;
  border-radius: 3px;
  color: #444;
  padding: 2px 5px;
  font-size: 90%;
  font-family: monospace;
  background-color: white;
  white-space: pre-wrap;

  max-width: 40em;
  position: absolute;
  z-index: 10;
  -webkit-box-shadow: 2px 3px 5px rgba(0,0,0,.2);
  -moz-box-shadow: 2px 3px 5px rgba(0,0,0,.2);
  box-shadow: 2px 3px 5px rgba(0,0,0,.2);

  transition: opacity 1s;
  -moz-transition: opacity 1s;
  -webkit-transition: opacity 1s;
  -o-transition: opacity 1s;
  -ms-transition: opacity 1s;
}

.CodeMirror-Tern-hint-doc {
  max-width: 25em;
  margin-top: -3px;
}

.CodeMirror-Tern-fname { color: black; }
.CodeMirror-Tern-farg { color: #70a; }
.CodeMirror-Tern-farg-current { text-decoration: underline; }
.CodeMirror-Tern-type { color: #07c; }
.CodeMirror-Tern-fhint-guess { opacity: .7; }