Boy you seem to be the fact machine tonight...lol I think it is hard to say since blue ink is the main ink used in our world today. So do you remember better because of the color or because you ignore the color of the ink and remember what you write. Also like your Lobster and jellyfish question.
I'd like to read that study myself. Who knows though, maybe it's true for some reason. But the majority of disposable pens, like bic pens that are 10 or so in a bag for a few bucks, come with blue ink as the norm. So that may have something to do with it.
I used to own a ton of blue pens too. Where did I put them???
There's an idea! =^)
blue ink is for lesbians