I just picked up a Danitrio Hakkaku Tame-nuri (Octagon with the ren urushi) that has a stub nib. I have not inked it yet and I am looking for recommendations for a suitable ink. I'd like something with a vibrant color but that is safe for the pen. I am not a fan of black or standard blue colors. I have some of the Montblanc Leonardo chalk ink that I was thinking of using. Another option is a Visconti bordeaux. I look forward to your recommendations.