Mime Mail Compress mangles absolute URLs in CSS properties

The function css_style_to_array in mimemail_compress.inc assumes there will be no colons in the attribute value, but there can be such in the case of a background-image attribute, for example: background-image:url('http://mysite.com/images/bg_750.gif');

As a result the module currently mangles that attribute.

The code that does this:

        list($key,$value) = explode(':',$def);

Could be replaced with:

        preg_match("/([^:]+):(.+)/", $def, $matches);
        $key   = $matches[1];
        $value = $matches[2];

Or am I wrong?

Thanks,
Ralph Dosser