How to use the gita.utils.Color function in gita

def _get_branch_color() -> str:
    """
    Return terminal color string for a repo
    """
    diff_returncode = run_quiet_diff(['@{u}', '@{0}'])
    has_no_remote = diff_returncode == 128
    has_no_diff = diff_returncode == 0
    if has_no_remote:
        return Color.white
    elif has_no_diff:
        return Color.green
    else:
        common_commit = get_common_commit()
        outdated = run_quiet_diff(['@{u}', common_commit])
        if outdated:
            diverged = run_quiet_diff(['@{0}', common_commit])
            return Color.red if diverged else Color.yellow
        else:  # local is ahead of remote
            return Color.purple

def describe(repos: Dict[str, str]) -> str:
    """
    Return the status of all repos
    """
    if repos:
        name_width = max(len(n) for n in repos) + 1
    for name in sorted(repos):
        path = repos[name]
        head = get_head(path)
        dirty, staged, untracked, color = _get_repo_status(path)
        yield f'{name:<{name_width}}{color}{head+" "+dirty+staged+untracked:<10}{Color.end} {get_commit_msg()}'