Thanks for this comment! I dabble in fountain pens a bit, and one of my favorite inks is "ao" by Taccia. Now it all makes sense (tho, to my eye it's kind of a

Thanks for this comment! I dabble in fountain pens a bit, and one of my favorite inks is "ao" by Taccia. Now it all makes sense (tho, to my eye it's kind of a blurple–royal blue; I get no green or teal from it. But, now I'm tempted to go do a blotter of it and look at it extra carefully in natural light.)