Change background color of product preview images

-- HikaShop version -- : HikaShop [1407241754]
-- Joomla version -- : 3.2.3

I'm trying to figure out why some of my product images have a black background... I've checked the product category's settings and they all appear to be white (FFFFFF).

www.ifapray.org/A1/index.php/store/all-merchandise

Hi,

Don't you have added something like:

,'background' => '#000000'

$image_options = array('default' => true,'forcesize'=>$this->config->get('image_force_size',true),'scale'=>$this->config->get('image_scale_mode','inside'));
// By
$image_options = array('default' => true,'forcesize'=>$this->config->get('image_force_size',true),'scale'=>$this->config->get('image_scale_mode','inside'),'background' => '#000000');

How do I change that setting for the image? Is it in the component interface or in CSS?