For the Japanese set, the function row seems a bit odd at first, but does grow on you (well, for me it did). I understand that it'd be a change from the usual. I think for those who see the colorway as red and green, I think Ivan did it so that when imsto dyesubs the caps, the sea foam green will turn out more cyan and the red more towards magenta. The Miami Odessa mix had the magenta more towards pink and the cyan ended up light blue. Just a theory.
As for the Hangul set, the burnt orange/brown came out nice for the Cyrillic R2 so it should work well for this set. I had envisioned a revised Hangul set to have a dark brown for EN, and a jade green for the Hangul. Something along the lines of branches with leaves for white cherry blossoms, with white cherry blossoms being the base off white of the key cap. So it would have a nature type feel but with a more modern font ... or I'm just delirious with the whole cherry blossom thing
) Anyways, the difficulty would be imsto to generate a jade green on a keycap. I'm sure people still enjoyed the look of the greens from the Irish set from r2, so I was hoping a green would pop up for Hangul.