Zara Evening Lookbook 2011

Baffled. Why would you do a photo shoot on a black background if you know you have dark garments? If someone could answer that, that would be great, because I am confused. I like to SEE the clothes on a background that is usually plain or bright. Never mind - I thought I had to get that out there. Now I'm done, This is Zara Men's evening collection. I have found this a bit late but it's still 2011 so I have the right to post it ha!