I'm looking to plant at least one copper beech in my yard. From what I understand, this would be a european beech. Is this 'copper' kind the green-leafed kind, or the purple-leafed kind? (Do the purple leaves eventually turn bronzey-copper?). Thanks for the info!

(And, while I'm at it -- if I were to plant two of them, how far apart should they be? I've seen some pictures on the internet where they seem awfully close together. I'm creating a miniature forest in my yard, so if it all ends up shady and overgrown-looking, that's perfect).