Background filter broken

[peterpoe]

Error: Attempted to call method "palette" on class "Imagine\Imagick\Image" in vendor/liip/imagine-bundle/Liip/ImagineBundle/Imagine/Filter/Loader/BackgroundFilterLoader.php at line 22

$background = $image->palette()->color(
    isset($options['color']) ? $options['color'] : '#fff',
    isset($options['transparency']) ? $options['transparency'] : null
);

should be

$background = new Color(
    isset($options['color']) ? $options['color'] : '#fff',
    isset($options['transparency']) ? $options['transparency'] : 0
);