portainer/app/edge/components/edge-stack-status/edgeStackStatus.css

.status:not(:last-child) {
  margin-right: 1em;
}

.status .icon {
  padding: 0 !important;
  margin-right: 1ch;
  border-radius: 50%;
  background-color: grey;
  height: 10px;
  width: 10px;
  display: inline-block;
}

.status .error {
  background-color: #ae2323;
}

.status .acknowledged {
  background-color: #337ab7;
}

.status .ok {
  background-color: #23ae89;
}