human
I wrote the below code

    def replace_color(m):
        '\n                                Callback    function,    to    replace    a    colour    tag    with    its    content    and    a\n                                suitable    escape    sequence    to    change    colour.\n                                '
        return ('%s%s%s' % (Colors[m.group(1)], m.group(2), Colors['end']))
    text = re.sub('\\[color\\s*([a-z]+)\\](.*?)\\[\\/color\\]', replace_color, text)
    return text

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def format_colors(text):