src/vs/editor/standalone/browser/standaloneEditor.ts/colorize
export function colorize(text: string, languageId: string, options: IColorizerOptions): Promise<string> {
	const languageService = StandaloneServices.get(ILanguageService);
	const themeService = <StandaloneThemeService>StandaloneServices.get(IStandaloneThemeService);
	themeService.registerEditorContainer(document.body);
	return Colorizer.colorize(languageService, text, languageId, options);
}