Dark Theme css override for Google Calendar, not-fully done, yet pretty usable

google-cal-dark-theme.css

:root {
	color-scheme: dark;
	--primary: #bb86fc;
  --primary-variant: #3700b3;
  --on-primary: #000;
  --secondary: #03dac5;
  --secondary-variant: #d2e3fc;
  --on-secondary: #000;
  --on-secondary-variant: #018786;
  --surface: #121212;
  --surface-transparent: rgba(255,255,255,0);
  --textfield-surface: #0e0c0b;
  --on-surface: #fff;
  --on-surface-variant: #5f6368;
  --background: #121212;
  --on-background: #fff;
  --hairline: rgba(255, 255, 255, 0.4);
  --error: #cf6679;
  --on-error: #fff;
  --fab: #bb86fc;
  --fab-hover: #3700b3;
  --now: #0842a0;
}

/** the following overrides probably not working after a new release, if the class names change **/
header, .I7OXgf, .gHQcAb {
	background: var(--background) !important;
}

.uoCvO, .SWGFcb {
	color: inherit !important;
}

.IJDILb {
	color: var(--hairline) !important;
}