def formatCodes(codestr):
    """Color by building."""
    if ('BSC10' in codestr) or ('BSC9' in codestr) or ('EY' in codestr) \
       or ('EX' in codestr):
        return 'b.'
    if ('BSC6' in codestr) or ('BSC5' in codestr) or ('MY' in codestr) \
       or ('MX' in codestr):
        return 'k.'
    else:  #LVEA
        return 'g.'