def formatCodes(codestr):
    """Color by enclosure number."""
    if ('4' in codestr):
        return 'b.'
    if ('10' in codestr):
        return 'k.'
    if ('1' in codestr):
        return 'r.'
    if ('7' in codestr):
        return 'g.'
    else:
        return 'c.'