I was able to get the fg color, but I was unable to change or alter the bg color.

#!/usr/bin/perl

BEGIN { $ENV{'TKPODDEBUG'} = 1; }

use strict;
use warnings;
use Tk;
use Tk::Pod::Text;

my $Man_frame = 8;

my $file = '/usr/lib/perl5/5.8.8/CGI.pm';

my $mw = MainWindow->new;
my $ptw = $mw->Scrolled ("PodText",
    -fg         => 'black',
    -file       => $file,
    -scrollbars => "se",
    -wrap       => 'word',
)->form(
    -top    => [$Man_frame], 
    -left   => ['%1',0], 
    -right  => ['%99',0], 
    -bottom => ['%98',0],
);

MainLoop;
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