:local {
  .clinical-lowlight-theme {
    --terra-dev-site-page-activity-overlay-background: rgba(28, 35, 39, 0.7);
    --terra-dev-site-page-activity-overlay-background-image: none;
    --terra-dev-site-page-activity-overlay-content-color: #c5c5c6;
    --terra-dev-site-page-activity-overlay--content-text-shadow: none;
  }
}