When I first got into fountain pens, I bought ink because I liked the color, or (often) because I liked the philosophy behind the company that made it, (Mr. Tardiff is an individualist after my own heart.) however, I never would have guessed before I found this forum that there could ever, EVER be a fountain pen ink that could be called, for lack of a better term, "controversial".
I suppose anything that arouses strong emotions might be worth getting into a tizzy for, and we pick colors because we like them, so I guess I shouldn't be too surprised, considering how strongly practically everyone feels about Baystate Blue. It's got to be the most vibrant, delightful color I own.
Well, I'm tired of people ragging on Baystate Blue, so I did this dilution to show that it can be tamed, if you're having trouble with it. As I said, I love the color, but it feathers anywhere from ever-so-slightly to badly on my Clairefontaine (90gsm), Fabriano (85gsm), and Staples Bagasse (the stuff is practically see-through, but handles fountain pen ink well), as well as my hand-picked Norcom notebook material. However, I want to show you that by diluting it, you can make it perform splendidly.
I got a sample of Éclat de Saphir a long while ago, and I've been using it in a Pilot Petit1, and from the moment I first saw it, I've been thinking "this looks just like a thinned out Baystate Blue", it doesn't have the vibrancy, but it does have excellent performance on cheap papers (most of what I use at work, sadly) so at last, I did a side by side comparison, and I'm quite happy.
The paper I did this on came from a 50¢ Norcom notebook I pulled from Walmart. Good lord. Short of a napkin, it doesn't get much thinner/cheaper than this.