Thank you for checking out my module, this really is an honor. :) You can simplify a few things, for what it is worth:
use strict;
use warnings;
use Spreadsheet::HTML qw( portrait );
my %hash = (
kumquat => 'orange',
pomegranate => 'red',
cherimoya => 'green',
lingonberry => 'purple'
);
my @data = ( [sort keys %hash], [map $hash{$_}, sort keys %hash] );
print portrait(
data => \@data,
indent => ' ',
th => { style => { background => $data[1] } },
td => { style => { background => $data[1] } },
);
__DATA__
<table>
<tr>
<th style="background: green">cherimoya</th>
<th style="background: orange">kumquat</th>
<th style="background: purple">lingonberry</th>
<th style="background: red">pomegranate</th>
</tr>
<tr>
<td style="background: green">green</td>
<td style="background: orange">orange</td>
<td style="background: purple">purple</td>
<td style="background: red">red</td>
</tr>
</table>
jeffa
L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)