public Parser foregroundPhrase() {
        if (foregroundPhraseParser == null) {
           FutureParser future = scoped("foregroundPhrase");
           foregroundPhraseParser = future;
           future.setParser(
               sequence(
                   choice(
                       token("FOREGROUND-COLOR"),
                       token("FOREGROUND-COLOUR")
                   ),
                   optional(
                       token("IS")
                   ),
                   integer()
               )
           );
        }

        return foregroundPhraseParser;
    }