The blue and barring is REALLY pretty. He is going to grow up to be one stunning rooster. I bet you'll have a lineup for hatching eggs if you can duplicate this effect in his chicks.
I love chickens; there are no limits to what you can get.
I havent grown out any other roos, but theres a few people who have some baby boys growing out, so Ill be really interested to see how they look, if they are all barred in the same places. Interesting stuff.