elk/styles/vars.css

:root {
  --c-primary: #53b3cb;
  --c-primary-active: #3a7b8c;
  --c-border: #88888820;
  --c-bg-base: #fff;
  --c-bg-active: #efefef;
  --c-text-base: #222;
}

.dark {
  --c-bg-base: #111;
  --c-bg-active: #222;
  --c-text-base: #fff;
}