Image effects like blur and recoloring with Imagine

Code
<?php

use Imagine\Image\Metadata\MetadataBag;
use Imagine\Image\Palette\RGB as C;
use Imagine\Image\Palette\Color\RGB;
use Imagine\Gd\Image;

$imgPath = 'php_logo.png';

$resource = imagecreatefrompng($imgPath);
$image = new Image($resource, new C(), new MetadataBag());

// original
$original = base64_encode($image->get('png'));

// get effects object for resource
$effects = $image->effects();

$effects->blur();

$rgbValues = [100, 255, 50];
$alpha = 0;
$rgb = new RGB(new C(), $rgbValues, $alpha);
$effects->colorize($rgb);

$effects->gamma(4);

// changed image
$changed = base64_encode($image->get('png'));

echo 'original:<br><img src="data:image/png;base64,' . $original . '">' . PHP_EOL;
echo 'effects:<br><img src="data:image/png;base64,' . $changed . '">' . PHP_EOL;
Result
original:

effects:
Used Versions
PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8