Chagoi are generally Brown/tan or Olive drab, single color Koi. Very tame and usually grow large. Kigoi are solid YELLOW (not red like I originally posted, duuuhh

).
The problem with breeding for type is the mixed gene pools floating around. Unless you absolutely know the lineage of both parent Koi, (information that is only available on VERY expensive imports) there is no way to know what recessive genes may be hidden from view.
Last year our Kin Aka Bekko male spawned with our female Sanke. Their offspring included Shiro Bekko, Ki Bekko, Shiro Utsuri, Ki Utsuri, Hi Utsuri, Kohaku, Sanke, Platinum Ogon, Yamabuki Ogon, Orenji, Hariwake, Asagi, Kigoi, Chagoi, Ochiba..., some normal scaled, some metallic, Ginrin, and Kinrin.
Since they were of mixed parentage and no particular bloodline their offspring reflected a broad spectrum of varieties. Most of them were crummy crapagoi, but a few are pretty decent. Breeding for type is a nice goal, but even with known bloodlines the percentages aren't as good as you might imagine. Remember, no matter the variety they all originated from black food fish carp.