.swatch {
  height: 20px;
  width: 20px;
  border-radius: 1px;
  margin-bottom: 1em;
}

.hue {
  background-image: linear-gradient(to right, red, yellow, green, skyblue, 	blue,  violet);
  border-radius: 1px;
  border-style: solid;
  border-width: thin;
}
.input-group-addon {background-color:#fff;border:0;padding:0;margin:0;padding-top:3px;}