Not to quibble - but since you're new to CGI.pm, note that you could write it this way:

use strict;
use CGI qw/:standard/;

print header, 
      start_html,
      start_form,
      "What's your favorite color?",
      textfield('color'),
      p,
      "What's your favorite food?",
      textfield('food'),
      p,
      submit,
      end_form,
      hr, "\n";

if (param) {
  print 
    "Favorite color: ", param('color'),p,
    "Favorite food: ", param('food'), "\n";
}
print end_html;
[download]