Here is my ginrin shiro utsuri from a local farm in rural Blitar, Indonesia.
I obtained this shiro in late 2016. The fish doesnt look too promising at that point but the breeder promised me a surprise should I am willing and patient enough to grow it out.
Sure enough some 3 months later the sumi started to develop a bit and overall shiroji improves.
Much later on in early August 2017 .... the ugly shiro utsuri transformed into a short-body type of koi, well bulk conformation type of fish.
It may not be growing large, but all the sumi promise does show and ginrin quality stays good.
I wonder if the sumi on the head will ever come back in near future.