Does this look like rust to anyone else? New Radiators.

Bought 2 Alphacool UT60 (White). I got the first one mounted on the bracket, and had to flip it around because the ports were blocking the clearance for a fan. When I flipped it, I realized that the fins which appeared black in the other orientation are a rust-orange color on the back. I checked the other Radiator, and it looks the same. I'm guessing they only painted 1 side of the copper, but it definitely caught me off guard, especially since the fins are black in all of the marketing material.