def diffcolor(s1, s2):
    ''' --word-diff=color clone '''
    string = ''
    for line in diff(s1, s2):
        if line[0] == '-':
            string += ' ' + TermColors.red(line[2:])
        elif line[0] == '+':
            string += ' ' + TermColors.green(line[2:])
        else:
            string += ' ' + line
    return string[1:]
--word-diff=color clone