ui/src/main/sass/components/_status.scss

.img-circle {
  width: 10px;
  height: 10px;
  background-color: #CCC;
  display: inline-block;
  border-radius: 50%;

  &.okay {
    background-color: $colors_success;
  }

  &.error {
    background-color: $colors_error;
  }

  &.attention {
    background-color: $colors_warning;
  }

  &.in-progress {
    background-color: $colors_highlight;
  }
}