gitlab-org--gitlab-foss/app/assets/stylesheets/pages/notifications.scss

.notification-list-item {
  line-height: 34px;
}

.notification {
  position: relative;
  top: 1px;

  > .fa {
    font-size: 18px;
  }
}

.ns-part {
  color: $gl-text-green;
}

.ns-watch {
  color: $gl-success;
}

.ns-mute {
  color: $gl-danger;
}