<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def colorize_invoke_command(self, string):
 """ Apply various heuristics to return a colorized version the invoke command string. If these fail, simply return the string in plaintext. Inspired by colorize_log_entry(). """


        final_string = string

        try:

            # Line headers
            try:
                for token in ['START', 'END', 'REPORT', '[DEBUG]']:
                    if token in final_string:
                        format_string = '[{}]'
                        # match whole words only
                        pattern = r'\b{}\b'
                        if token == '[DEBUG]':
                            format_string = '{}'
                            pattern = re.escape(token)
                        repl = click.style(
                            format_string.format(token),
                            bold=True,
                            fg='cyan'
                        )
                        final_string = re.sub(
                            pattern.format(token), repl, final_string
                        )
            except Exception: # pragma: no cover
                pass

            # Green bold Tokens
            try:
                for token in [
                    'Zappa Event:',
                    'RequestId:',
                    'Version:',
                    'Duration:',
                    'Billed',
                    'Memory Size:',
                    'Max Memory Used:'
                ]:
                    if token in final_string:
                        final_string = final_string.replace(token, click.style(
                            token,
                            bold=True,
                            fg='green'
                        ))
            except Exception: # pragma: no cover
                pass

            # UUIDs
            for token in final_string.replace('\t', ' ').split(' '):
                try:
                    if token.count('-') is 4 and token.replace('-', '').isalnum():
                        final_string = final_string.replace(
                            token,
                            click.style(token, fg='magenta')
                        )
                except Exception: # pragma: no cover
                    pass

            return final_string
        except Exception:
            return string