I am a white English male so have fair skin and fine light brown hair, due to my complexion I think the redness can take a bit longer to fade. However I don't see any myself now, it maybe the camera flash that emphasises it?
I think the motor was 0.8 mm , however if you look at the earliest pictures you will see the grafts were placed very close together, at 5 months there is still a more hairs to come through or thicken, some people say at 5 months only 40% of the grafted hairs will have come through. I am not sure how many grafts were damaged during extraction as I didn't ask. The only pain was from the anaesthetic being injected and some soreness and itching afterwards.