I was a little determined to come up with an ink the color of my husband's eyes a couple years ago, and I think I succeeded...he has a complex green iris with a golden brown ring around the pupil. I mixed some of the Iroshizuku together, along with water (counting drops from a syringe), and the combination of Shin-ryoku, Ina-ho, and Kiri-same seemed to do the trick! I was even able to get the bleeding edge to show gold-brown, like the ring around his pupil... the last image is a closeup of a swab of the ink on some grainy paper.
Thought you all would enjoy...
Edited by RedRinger, 22 August 2019 - 02:30.