#!/usr/bin/env perl

use strict;
use warnings;

my $fg = "\x1b[38;5;";
my $bg = "\x1b[48;5;";
my $rs = "\x1b[0m";

my $color = 0;

for (my $row = 0; $row < 32; ++$row) {
    for (my $col = 0; $col < 8; ++$col) {
        print get_color($color);
        $color++;
    }
    print "\n";
}

sub get_color {
    my ($color) = @_;
    my $number = sprintf '%3d', $color;
    return qq/${bg}${color}m ${number} ${rs} ${fg}${color}m${number}${rs} /;
}