github-colors-dark-media.css

@media (prefers-color-scheme: dark) {
  :root {
    --color-note: #2f81f7;
    --color-tip: #3fb950;
    --color-warning: #d29922;
    --color-severe: #db6d28;
    --color-caution: #f85149;
    --color-important: #a371f7;
  }
}