How to use the yamllint.cli.Format.standard_color function in yamllint

def run(self):
        ''' run command '''
        if self.excludes is not None:
            print("Excludes:\n{0}".format(yaml.dump(self.excludes, default_flow_style=False)))

        config = YamlLintConfig(file=self.config_file)

        has_errors = False
        has_warnings = False

        if self.format == 'parsable':
            format_method = Format.parsable
        else:
            format_method = Format.standard_color

        for yaml_file in find_files(rootdir, self.excludes, None, r'\.ya?ml$'):
            first = True
            with open(yaml_file, 'r') as contents:
                for problem in linter.run(contents, config):
                    if first and self.format != 'parsable':
                        print('\n{0}:'.format(os.path.relpath(yaml_file)))
                        first = False

                    print(format_method(problem, yaml_file))
                    if problem.level == linter.PROBLEM_LEVELS[2]:
                        has_errors = True
                    elif problem.level == linter.PROBLEM_LEVELS[1]:
                        has_warnings = True

        if has_errors or has_warnings:

def run(self):
        ''' run command '''
        if self.excludes is not None:
            print("Excludes:\n{0}".format(yaml.dump(self.excludes, default_flow_style=False)))

        config = YamlLintConfig(file=self.config_file)

        has_errors = False
        has_warnings = False

        if self.format == 'parsable':
            format_method = Format.parsable
        else:
            format_method = Format.standard_color

        for yaml_file in find_files(os.getcwd(), self.excludes, None, r'\.ya?ml$'):
            first = True
            with open(yaml_file, 'r') as contents:
                for problem in linter.run(contents, config):
                    if first and self.format != 'parsable':
                        print('\n{0}:'.format(os.path.relpath(yaml_file)))
                        first = False

                    print(format_method(problem, yaml_file))
                    if problem.level == linter.PROBLEM_LEVELS[2]:
                        has_errors = True
                    elif problem.level == linter.PROBLEM_LEVELS[1]:
                        has_warnings = True

        if has_errors or has_warnings:

def run(self):
        ''' run command '''
        if self.excludes is not None:
            print("Excludes:\n{0}".format(yaml.dump(self.excludes, default_flow_style=False)))

        config = YamlLintConfig(file=self.config_file)

        has_errors = False
        has_warnings = False

        if self.format == 'parsable':
            format_method = Format.parsable
        else:
            format_method = Format.standard_color

        for yaml_file in find_files(os.getcwd(), self.excludes, None, r'^[^\.].*\.ya?ml$'):
            first = True
            with open(yaml_file, 'r') as contents:
                for problem in linter.run(contents, config):
                    if first and self.format != 'parsable':
                        print('\n{0}:'.format(os.path.relpath(yaml_file)))
                        first = False

                    print(format_method(problem, yaml_file))
                    if problem.level == linter.PROBLEM_LEVELS[2]:
                        has_errors = True
                    elif problem.level == linter.PROBLEM_LEVELS[1]:
                        has_warnings = True

        if has_errors or has_warnings:

def show_problems(problems, file, args_format, no_warn):
    max_level = 0
    first = True

    for problem in problems:
        max_level = max(max_level, PROBLEM_LEVELS[problem.level])
        if no_warn and (problem.level != 'error'):
            continue
        if args_format == 'parsable':
            print(Format.parsable(problem, file))
        elif args_format == 'colored' or \
                (args_format == 'auto' and supports_color()):
            if first:
                print('\033[4m%s\033[0m' % file)
                first = False
            print(Format.standard_color(problem, file))
        else:
            if first:
                print(file)
                first = False
            print(Format.standard(problem, file))

    if not first and args_format != 'parsable':
        print('')

    return max_level

def show_problems(problems, file, args_format, no_warn):
    max_level = 0
    first = True

    for problem in problems:
        max_level = max(max_level, PROBLEM_LEVELS[problem.level])
        if no_warn and (problem.level != 'error'):
            continue
        if args_format == 'parsable':
            print(Format.parsable(problem, file))
        elif args_format == 'colored' or \
                (args_format == 'auto' and supports_color()):
            if first:
                print('\033[4m%s\033[0m' % file)
                first = False
            print(Format.standard_color(problem, file))
        else:
            if first:
                print(file)
                first = False
            print(Format.standard(problem, file))

    if not first and args_format != 'parsable':
        print('')

    return max_level