only prints an array with the 6 8x8 cube faces colors to paste in my .h file

uncompressed.pl

#!/usr/bin/perl

use strict;
use warnings;

my $string = "unsigned char pixels[] = {";

my %facecolors = (
		a => "255, 0, 0",
		b => "0, 0, 255",
		c => "0, 255, 0",
		d => "255, 0, 255",
		e => "0, 255, 255",
		f => "255, 255, 0"
		);

foreach my $color (sort keys %facecolors) {
	if (!($facecolors{$color} eq "255, 255, 0")) {
		for (my $i = 0; $i < 64; $i++) {
			if ($i % 3 == 0) {
				$string .= "\n\t";
			}
			$string .= qq[$facecolors{$color}, ];
		}
		$string .= "\n";
	} else {
		for (my $i = 0; $i < 63; $i++) {
			if ($i % 3 == 0) {
				$string .= "\n\t";
			}
			$string .= qq[$facecolors{$color}, ];
		}
		$string .= qq[\n\t$facecolors{$color}\n];
	}
}
$string .= "};\n";
print $string;