Iron cast cookware: rust-ish or black coat even on new cookware, is it safe?
Lodge is an ideal choice because it comes pre-seasoned. While I expect to wash a bit of muck out of them after bringing one home, it should only be stuff the pan has accumulated after it was seasoned in the factory. And I don't mind that, because they're pans after all and designed to accumulate things. If you're still seeing that after uses and washes, I'd get in touch with them. 

You might be in need of replacements, which the warranty (fortunately also great) would cover. I can't tell from the photos if it's iron oxide or not, and obviously you can't either - I'd call the warranty line and let them know what you're seeing.

It's certainly not what I've seen (I love them!) after an initial rinsing with hot water and drying prior to first use. Something seems off to me.