dat.gui/src/dat/gui/GUI.css

#guidat {
  position: fixed;
  top: 0;
  right: 0;
  width: auto;
  z-index: 1001;
  text-align: right;
}

.guidat {
  color: #fff;
  opacity: 0.97;
  text-align: left;
  float: right;
  margin-right: 20px;
  margin-bottom: 20px;
  background-color: #fff;
}

.guidat,
.guidat input {
  font: 9.5px Lucida Grande, sans-serif;
}

.guidat-controllers {
  height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: rgba(0, 0, 0, 0.1);
}

a.guidat-toggle:link,
a.guidat-toggle:visited,
a.guidat-toggle:active {
  text-decoration: none;
  cursor: pointer;
  color: #fff;
  background-color: #222;
  text-align: center;
  display: block;
  padding: 5px;
}

a.guidat-toggle:hover {
  background-color: #000;
}

.guidat-controller {
  padding: 3px;
  height: 25px;
  clear: left;
  border-bottom: 1px solid #222;
  background-color: #111;
}

.guidat-controller,
.guidat-controller input,
.guidat-slider-bg,
.guidat-slider-fg {
  -moz-transition: background-color 0.15s linear;
  -webkit-transition: background-color 0.15s linear;
  transition: background-color 0.15s linear;
}

.guidat-controller.boolean:hover,
.guidat-controller.function:hover {
  background-color: #000;
}

.guidat-controller input {
  float: right;
  outline: none;
  border: 0;
  padding: 4px;
  margin-top: 2px;
  background-color: #222;
}

.guidat-controller select {
  margin-top: 4px;
  float: right;
}

.guidat-controller input:hover {
  background-color: #444;
}

.guidat-controller input:focus,
.guidat-controller.active input {
  background-color: #555;
  color: #fff;
}

.guidat-controller.number {
  border-left: 5px solid #00aeff;
}

.guidat-controller.string {
  border-left: 5px solid #1ed36f;
}

.guidat-controller.string input {
  border: 0;
  color: #1ed36f;
  margin-right: 2px;
  width: 148px;
}

.guidat-controller.boolean {
  border-left: 5px solid #54396e;
}

.guidat-controller.function {
  border-left: 5px solid #e61d5f;
}

.guidat-controller.number input[type=text] {
  width: 35px;
  margin-left: 5px;
  margin-right: 2px;
  color: #00aeff;
}

.guidat .guidat-controller.boolean input {
  margin-top: 6px;
  margin-right: 2px;
  font-size: 20px;
}

.guidat-controller:last-child {
  border-bottom: none;
  -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.5);
  -moz-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.5);
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.5);
}

.guidat-propertyname {
  padding: 5px;
  padding-top: 7px;
  cursor: default;
  display: inline-block;
}

.guidat-controller .guidat-slider-bg:hover,
.guidat-controller.active .guidat-slider-bg {
  background-color: #444;
}

.guidat-controller .guidat-slider-bg .guidat-slider-fg:hover,
.guidat-controller.active .guidat-slider-bg .guidat-slider-fg {
  background-color: #52c8ff;
}

.guidat-slider-bg {
  background-color: #222;
  cursor: ew-resize;
  width: 40%;
  margin-top: 2px;
  float: right;
  height: 21px;
}

.guidat-slider-fg {
  cursor: ew-resize;
  background-color: #00aeff;
  height: 21px;
}