src/vs/workbench/services/themes/browser/browserHostColorSchemeService.ts/BrowserHostColorSchemeService/dark
class BrowserHostColorSchemeService:	get dark(): boolean {
		if (window.matchMedia(`(prefers-color-scheme: light)`).matches) {
			return false;
		} else if (window.matchMedia(`(prefers-color-scheme: dark)`).matches) {
			return true;
		}
		return this.environmentService.configuration.colorScheme.dark;
	}