src/vs/workbench/services/textMate/browser/textMateWorker.ts/TextMateWorker/acceptTheme
class TextMateWorker:	public async acceptTheme(theme: IRawTheme, colorMap: string[]): Promise<void> {
		const grammarFactory = await this._grammarFactory;
		if (grammarFactory) {
			grammarFactory.setTheme(theme, colorMap);
		}
	}