The command

# to test, will open in gv
a2ps -P display --pretty-print=perl --prolog=color  script.pl
# to print 
a2ps -P lp0 --pretty-print=perl --prolog=color  script.pl
[download]

will make nice booklet style code printouts. There is an -r setting for how many pages per sheet. I havn't done it in awhile, but I seem to remember there is a way to print 2 sides, so you can fold the sheets into a booklet. Maybe google will reveal the technique. Or maybe OpenOffice does booklets.