Today, I released Imager::Filter::Sepia 0.01.
This module is filter of Imager. I wrote XS module for the first time:-)
Imager::Filter::Sepia gets tone argument. This argument is color tone of sepia tone. If you make reddish sepia image, you can write below:
use Imager::Filter::Sepia;
my $tone = Imager::Color->new('#FF0000');
$img->filter(type => 'sepia', tone => $tone);