This Perl script will generate a 256 color map file that can be used in Fractint.
There is a script fractmap.pl that will run from the command line.
Also included is a CGI perl script that will generate a map on your web site.
You may generate 2,4,8,16,32,64, or 128 bands of different colors that blend together. You can also specify to have black bands between each color.