I've taken rods out of good motors that are that color. It's something with the coating. I'd be more concerned if the bearing ends were purple, which...
I bet its possible to get one real close to that.. My 3.4L Etec on 16" mid with carbon cowl but glass lower cowl sections weighs 485lbs totally ready...
I bought this engine 1 year ago. it didn’t have thermostats or a popit valve in it when I bought it so put all new back in and it throws the overheat...