Actually I have been kind of surprised that there aren't more light and dark colorations of piglets, they do all seem to stay in the medium range. I like the darker color (until it is too close to black) My other boar is almost black he is so dark, and has faint highlights of strawberry blonde. I would rather not have one so dark, but his babies are all medium red as well, lol.
Edit: I just went back to look at the pictures, That breeding photo is the other boar, Dumbo, and a fellow breeders gilt. I have 2 sows that look just like this gilt (one is new to me) Abigale and Dumbo have nice colored red babies.